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Transcript of taped conversations among German nuclear physicists (1945) (ghi-dc.org)
305 points by davidbarker on Aug 2, 2023 | hide | past | favorite | 283 comments



> HEISENBERG: [...] I believe this uranium business will give the Anglo–Saxons such tremendous power that EUROPE will become a bloc under Anglo–Saxon domination. If that is the case it will be a very good thing. I wonder whether STALIN will be able to stand up to the others as he has done in the past.

[...]

> WIRTZ: It seems to me that the political situation for STALIN has changed completely now.

> WEIZSÄCKER: I hope so. STALIN certainly has not got it yet. If the Americans and the British were good Imperialists they would attack STALIN with the thing tomorrow, but they won't do that, they will use it as a political weapon. Of course that is good, but the result will be a peace which will last until the Russians have it, and then there is bound to be war.


Weizacker wasn't alone in that opinion:

  [John] Von Neumann was, at the time, a strong supporter of "preventive war." Confident even during World War II that the Russian spy network had obtained many of the details of the atom bomb design, Von Neumann knew that it was only a matter of time before the Soviet Union became a nuclear power. He predicted that were Russia allowed to build a nuclear arsenal, a war against the U.S. would be inevitable. He therefore recommended that the U.S. launch a nuclear strike at Moscow, destroying its enemy and becoming a dominant world power, so as to avoid a more destructive nuclear war later on. "With the Russians it is not a question of whether but of when," he would say. An oft-quoted remark of his is, "If you say why not bomb them tomorrow, I say why not today? If you say today at 5 o'clock, I say why not one o'clock?"
https://cs.stanford.edu/people/eroberts/courses/soco/project...


Von Neumann deserves tremendous recognition but not for his sense of diplomacy.


For his smarts, but not for his wisdom.


Imagine that. He probably had the calculations in a 4x4 grid matching the possibilities already

I think he might be on to something ;)


Wow, this Weizsacker fellow predicted the https://en.wikipedia.org/wiki/Potsdam_Conference pretty much?

Sounds like it was this individual https://en.wikipedia.org/wiki/Carl_Friedrich_von_Weizs%C3%A4...


His brother was president of Germany from 1984 to 1994. It's quite an illustrious family [0].

[0] https://en.wikipedia.org/wiki/Weizs%C3%A4cker_family


> KORSCHING: "I would rather take Swedish nationality than stay in GERMANY and wait for the next war. On the other hand I would not make any effort to become British. If there is nothing more to be made out of GERMANY, one should at anyrate get away from RUSSIA."


The context here is that the German scientists thought it likely that Germany would be completely taken over by Russia (because the Western advance has stalled).


They were speaking after the end of the war, and Germany had been partitioned already into occupation zones. Potsdam was signed just before this conversation?


No. The conversation was on the eve of the Potsdam conference


Could you spell out what specifically you find significant about this quote?


Maybe it is note that situation has not changed since then and how Merkel has failed with her foreign politics with Russia and how Germany is paying now because of it. Or maybe it is proof how insightful this is.


He's a Nazi that worked on uranium enrichment saying he wants to stay away from the country his bomb would've presumably been used to ethnically cleanse with unprecedented efficiency. What "situation" are you hoping will change?


Yeah, if anything united Nazis and western allies, was their anti-USSR hating [1]. Which was the common ground for the western financial and infrastructure support and tolerance for Hitler before the war.

[1] Which was not about the situation in USSR itself (they could not care less, they supported worse attrocities before and after the war), but about losing their colonial and geopolitical influence, and about their own workers being "tempted" into socialism and demanding more rights, unions, and such.


If anything united Nazis and Soviets it was their anti-democracy hating. Which was the ground for Soviets providing material support to Germany, training to German officers, etc.

Right?


No, the ground was stalling for time to prepare for war, with a German Nazi establishment who was openly anti-communist and anti-USSR.

The "anti-democracy" communists did more to get rid of Nazis and fascism than all of Europe and US combined (the latter, especially, came late to the party, with token gestures like Normandy, and have since used movie after movie to instill in popular culture the idea they "won the war"). And had a much bigger toll.


Please don’t spread historical revisionism, the Soviets were perfectly fine with Nazism until it has turned against them. They teamed up with Nazi Germany to invade Poland together and even held talks to formally join the Axis, ffs.

And if it weren’t for the monumental material support in form of the US-provided lend-lease arrangement, the Nazis would’ve conquered the Soviet Union and carried out a genocide that’d have dwarfed the Holocaust.


It's a prescient statement with regard to the cold war.


I recently listened to the Hardcore History about atomic weapons and I hadn't realized how right as WWII ended everyone was ready to wage nuclear war against Stalin immediately.


Knowing that US was supplying USSR with weapons,airplanes, trucks and helping build entire factories right up until the end of the war and then wanted to nuke the same ally is really buffling. One one hand can be said, yes they wanted USSR to bleed fighting Germany (or do the harder fighting part) on the other hand it's just confusing and possibly different fractions within US government wanting different things.


There’s nothing baffling about it. An Enemy of my enemy is my ally. But when the business is done… keep your friends close but your enemies closer.


Both FDR and Churchill are on record as saying variants of "it is permissible to walk with the devil if it gets you to the other side of the bridge" about the alliance with Stalin.


This sort of ruthless pragmatism is sadly missing from today's politics. Recently people are more focused on imposing their will on the others instead of compromising, however unsavory the other side may be.


I find this statement one of the most astonishing things said on HN that I can remember.

The entire history of US foreign relations in South and Central America and the Middle East (at least!) is dominated with compromises similar to this.

It's difficult to know where to start a list!


Indeed the entire cold war (and I mean the previous one) was defined by this kind of questionable compromise. There was much talk of freedom and democracy while turning around to support brutal dictatorships, religious extremists and endless civil wars in order to defeat a supposedly more important enemy.

This is exactly why I'm so sceptical of the eagerness, even enthusiasm, of those who want to launch us straight into the next cold war, again to the mood music of ethical sounding objectives you cannot possibly oppose.


Please do start, meddling in those regions is well known to anybody interested in the topic (and currently helps greatly pro-putin crowds to rationalize and justify their views), but compromise ?

Perceived non-aligned folks were murdered if possible, often with CIA folks standing just behind the corner (Allende, Che etc.). You can't really say that putting into office fascist murderous dictator like Pinochet instead of Allende was a compromise in any way.


No need to limit it to the USA. The United States is not exceptional in this regard. Pragmatism has been a feature of the exercise of power for millennia.


I agree, but I'm guessing parent might have been thinking of domestic politics, which has become more a lot more polarised and zero-sum.


Yup. I'm excited that my comment is someone's most astonishing on HN though. That's quite an accomplishment!


I would be curious of the start of your list in the Americas, as I don't feel like making compromises with our adversaries is actually a common approach there.


Here's one: the US cooperating with Saudi-Arabia and other gulf states despite them being responsible for the largest terrorist attack(s) on US soil and funding terrorists, the big bad guy since 9/11, the reason why a generation of soldiers has fought in Iraq and Afghanistan, killing nearly a million people.


Do you know where the Americas are?


I suspect that GP believes that US-supported strongmen and right wing dictators in Latin America were US adversaries, rather than useful, crafted actors for US interests in their countries, who were managed and supported until and unless they markedly diverged from US interests.

If you’re swimming in a sea of US-standard media and patriotic narratives, I suppose it’s easier to believe the former rather than the latter.


> I suspect that GP believes that US-supported strongmen and right wing dictators in Latin America were US adversaries, rather than useful, crafted actors for US interests in their countries, who were managed and supported until and unless they markedly diverged from US interests.

I'm not sure how you'd get that from my comment (I'm not from the US, so I think you are reading an awful lot into what I said there!).

Either way, both those narratives fit the realpolitik the OP seemed to be calling for.


>The entire history of US foreign relations in South and Central America and the Middle East (at least!) is dominated with compromises similar to this.

If you meant the support and establishment of dictatorships and banana republics there, those aren't compromises in the sense of "working with the devil they hate", like they had to do in WWII with Stalin.

These are working joyly with "our kind of guys".

The main difference being that Stalin was an opponent and against the US interests, whereas those guys like Pinochet were always about the US interests, even groomed and build up especially to support them.


Like when the US pretends like Saudi Arabia didn't sponsor terrorist attacks and so continue to sell them weapons and buy oil?


> Recently people are more focused on imposing their will on the others instead of compromising, however unsavory the other side may be.

How can you believe this when unsavoury compromise is the relationship of most of the world with the US?


Stalins tactics were outrageous and included having resisting regions and towns being "pacified" by german troops before the red army would take them. This is the guy who wanted to share Europe with his buddy Adolf.



It was purely a functional alliance - no more. I don't think anyone had any preconceived notions that it was anything other than a marriage of convenience.

Keep in mind that Stalin himself professed and acted on the belief that coexistence with capitalism was impossible and thought that conflict with the West was inevitable within 15 years of WWII. We're all lucky that he died before then and the cooler head of Khrushchev prevailed.


"If we see that Germany is winning, we ought to help Russia, and if Russia is winning we ought to help Germany, and that way let them kill as many as possible" - Harry Truman

Geopolitical realism has always involved turning on your allies as soon as they become the primary threat to your power; or even better to induce two rival competitors to fight each other[0]

See Mearsheimer and political realism.

[0] https://en.wikipedia.org/wiki/Bait_and_bleed


"If we see that Germany is winning, we ought to help Russia, and if Russia is winning we ought to help Germany, and that way let them kill as many as possible, although I don't want to see Hitler victorious under any circumstances."


Not baffling if you know anything about the history of the US or the USSR.


The weapon part of the US contribution is way overrated.

The Soviets produced 157k airplanes, the US only gave them 11k (7%).

US gave 7k tanks, Soviets produced 87,500 (8%).

The main contribution by the US was support vehicles like jeeps and trucks and fuel. Neither the aircraft or tanks were very notable beyond the very early years.

The Soviets largely did it on the own armour/aircraft wise. Which was why Hitler was so obsessed with invading in the first place. He knew unless they rushed to invade Russia could unleash it's massive capacity for production that'd they'd be impossible to invade on their own, or at a minimum be way harder to beat.


> The main contribution by the US was support vehicles like jeeps and trucks and fuel

Obviously, these are all absolutely critical. As is the aluminum, high-octane avgas, etc that the Soviets obtained via Lend-Lease


As the Ukraine-Russia war illustrates, supply chain (support vehicles) are critical.


you overlook that those weapons were supplied at critical times, when the Soviet war machine had not ramped up yet. entire offensives were led with nearly only lend-lease kit.


Also small compared to what the British got. But what matters more is how critical they were : the Nazis culminated in view of the Kremlin (also, notably, a couple of days before Pearl Harbor and the US officially joined the war).


Western nations were also uncharacteristically tolerant of Hitler's militarization while he opposed the communists. Then they signed a non-aggression pact.

https://en.wikipedia.org/wiki/Molotov%E2%80%93Ribbentrop_Pac...


Only that right after WW2, nuking the Soviets wouldn't have helped. The Red Army had Berlin, had shorter, and well established, supply lines, and the numbers. Nuking Moscow had caused WW3 right after WW2 ended, the Soviets woupd have ended up controlling Germany, and propably other countries. Because a hand full of small nukes wouldn't have been that decisive.

The are reasons Operation Unthinkable wasn't launched. But one has to admit, the anti-communist propaganda that united people from Patton, McCarthy all the way to former Wehrmacht Generals, still has long lasting effects even today.


If History proved something is that Patton and McCarthy were right.


Come again? You mean the self-grandizing, almost sacked twice, never really promoted anti-semite Patton? And the lying about flight ime to get decorations, life desteoying, actually sacked and rediculed McCarthy?

But I'll bite, how exactly were those two individuals right about anything? Can ypu share some specific details?


Fun fact: hardcore xenophobic narratives in China has been using the term Anlgo-Saxons (昂撒), in recent years.


German Angelsächsisch (literal translation is Anglo Saxon) is typically used in German as an umbrella term for the English speaking world, so Britain-USA-commonwealth is covered by it. While it is used sometimes to “other” the English speaking world it does not lend itself as easily as other terms for xenophobia because three German regions are actually called Saxony (Lower Saxony and (upper) saxony, saxony-Anhalt. Xenophobic speech in German would often refer to “der Engländer”, or “der Amerikaner” (the Englishman, the American)


In German "angelsächsisch" often goes with "Kapitalismus" opposing "Rheinischer Kapitalismus". It is used when comparing free-market economies with social market economies. Germans think about London being a financial hub or not everyone in the US having health insurance, when using "angelsächsisch". They do not think about races being superior.

In case of the US, it even brings it closer to Europe because the term groups Great Britain and the US to compare them to mainland Europe (mostly France + Germany).


ChatGPT told me:

> Yes, Nazi propaganda did often refer to the Allies, particularly the UK and the US, using terms such as “Anglo-American” or “Anglo-Saxon” in a pejorative sense. This language reflected the Nazis’ racist ideology, in which they posited a hierarchy of races with Aryans at the top and viewed others, including Anglo-Saxons, as lesser or enemies. This also served to foster animosity and dehumanize the Allies among the German populace. However, such language was not universally used by all within the Nazi regime, and the terminology often varied depending on the context and specific propaganda objectives at the time.


ChatGPT is wrong here, IMO.

In general, the Brits were the "Tommys" or "Briten" or "Engländer", the Americans the "Amerikaner" or just "Amis", the Soviets were "Bolschewiken" or just "Russen".

Anglo-Saxon ("angelsächsisch") doesn't have a Nazi connotation, wasn't used in an exceptional way and isn't more dehumanizing than using "the brits", "the americans" or "the germans". "Amerikaner", "Briten" and "Russen" are also still in normal use.

Also: Nazi Germany did not see the Brits as "racially inferior". Most were also seen as "aryan".


Russian propaganda as well.


It's a fairly common term in many languages. It just means "English speaking nations". It's similar to "caucasian" meaning white (who cares any more that they crossed the Caucasus? but the term sticks).


Yeah. I guess most of the Chinese propagandists received training imported from Russia.


Why wouldn't they ?


Wasn't this on HN last year?

This is just a summary from the day the Germans found out about the bomb. The full transcripts are available.[1][2][3] Unfortunately, the recordings were not kept. They were not on magnetic tape; they were recorded on shellac records. Only the interesting parts were transcribed.

The conclusion of the US Alsos mission to investigate the German bomb program: "It was so obvious the whole German uranium set up was on a ludicrously small scale. Here was the central group of laboratories, and all it amounted to was a little cave, a wing of a small textile factory, a few rooms in an old brewery. To be sure, the laboratories were well equipped, but compared to what we were doing in the United States it was still small-time stuff. Sometimes we wondered if our government had not spent more money on our intelligence mission than the Germans had spent on their whole project."

[1] https://pubs.aip.org/DocumentLibrary/files/publishers/pto/co...

[2] https://pubs.aip.org/DocumentLibrary/files/publishers/pto/co...

[3] https://pubs.aip.org/DocumentLibrary/files/publishers/pto/co...


> It was so obvious the whole German uranium set up was on a ludicrously small scale. Here was the central group of laboratories, and all it amounted to was a little cave, a wing of a small textile factory, a few rooms in an old brewery. To be sure, the laboratories were well equipped, but compared to what we were doing in the United States it was still small-time stuff

Thank God the Germans didn't realize the potential there or the world would have looked very differently now. It's not as if they didn't have the technical chops to make something like this work. They even had working jet fighters.

Sometimes I wonder if Heisenberg secretly took them on the scenic route. Because his whole uranium cubes on strings thing looks a bit contrived.


Unknown to the allied until the very end of WWII, nazi scientists had discovered by accident a multitude of nerve agents before and during the war including in 1938 the now very infamous Sarin gas.

Despite having been mass produced and being ready for use during the entire war, it luckily never was. Had it been, it is likely the war would have lasted much longer and would have been much deadlier, it is also likely the first nuclear bomb would have been dropped on Berlin.

When WWII came to an end most of the supply and manufacturing plants were captured by the soviets and put back into production.

1964 US Army Training Film : https://www.youtube.com/watch?v=p2O5ndVkNKk

NY article: https://www.nytimes.com/2017/04/12/science/sean-spicer-hitle...


Oppenheimer hadn't just come out last year


Not precisely this item AFAICT. Searching "German physicists" and "Farm Hall" turns up some earlier items.

There was a Kottke post about this in 2019. One year, four, same thing.

<https://news.ycombinator.com/item?id=20659607>

This looks to be the same transcript, also from 2019:

<https://news.ycombinator.com/item?id=19113443>

And from 2016. You have several of the top comments:

<https://news.ycombinator.com/item?id=12568250>

And a discussion about the event from July 2022:

<https://news.ycombinator.com/item?id=32164657>

<https://pubs.aip.org/physicstoday/Online/5401/The-elusive-tr...>


> HEISENBERG: I don't believe a word of the whole thing. They must have spent the whole of their £500,000,000 in separating isotopes; and then it's possible.

How did Heisenberg know with such an accuracy the budget of the Manhattan project? Wikipedia states that it was $2.2 billion, and the pound/dollar exchange rate during the war was $4.03 for £1, so Heisenberg was less than 10% off.

Edit: I think all these discussions must have happened after they heard Truman's speech [1], where he quoted the pricetag of 2 billion dollars.

[1] https://millercenter.org/the-presidency/presidential-speeche...


Interesting that the pound did so much better during such dire times for the UK, in the mist of a fight to the death, it was losing.


Very interesting read. I read it all, and it looks to me none of the German scientists had any clue that you can build a plutonium bomb. They kept talking about 235 (i.e. Uranium-235), about isotope separation, but not a single hint that you could transmute U-238 into Pu-239 and then make a plutonium bomb.

What's not appreciated about the Manhattan project is that not only the US made a bomb, it made two, meaning two completely different designs. And they were aware of a third one: Glen Seaborg (the discoverer of plutonium) has investigated the feasibility of making a bomb from Uranium-233 [1]

  > Seaborg viewed uranium-233 as a potential backup to plutonium-239
So the US could have made bombs of three different designs, it just got confident enough that 2 will work out in the end. Of course, 10 years later (in 1955) it did build and test a U-233 bomb just to see that it's possible.

[1] https://trace.tennessee.edu/utk_gradthes/2758/


Right. They didn't even know plutonium existed. It was discovered in 1941, at U.C. Berkeley's cyclotron, and kept secret.


That’s nightmare fuel: finding out that your enemy is making physics bombs out of elements you weren’t aware of. It’s the plot of an X-Files or something.


> KORSHING: That shows at any rate that the Americans are capable of real cooperation on a tremendous scale. That would have been impossible in Germany. Each one said that the other was unimportant.

Say what you will about the US, and it certainly has its faults, but the Americans, both the private sector and public sector, have certainly figured out how to coordinate with others towards a goal.

The ability to coordinate with others seems like a more valuable quality than virtually any other in a serious project, in my experience.


I don't disagree with the sentiment, but I do believe that Americans ability to cooperate (both with each other in general and between the private and public sectors) is not now what it was in the mid-20th century.


Disagree.

If you were in Manhattan the first week after 9/11 you witnessed tremendous solidarity and cooperation.

It was, in some small way, life changing to witness.


I mean WW2 was a particularly cooperative time for the US.


Besides large scale immigration, what changed in America? Complacency during peacetime?


I’d say the COVID vaccines are an example showing what’s still possible. Not to discount the Astra-Zeneca vaccine in the UK of course.

Public acceptance of those vaccines is another story, of course…


COVID vaccines proved that if WW2 were happening today, during blackouts half the country would turn all of their lights on and set out spotlights because they believed the war was a CIA psyop.


And would they be wrong? We know the CIA wanted to perform false flag attacks on the US to support an invasion of Cuba, and this only didn't happen because the then president refused to authorise it; is a repeat of that more or less likely than a "real" war?


Could be, could be not

But the ones with the lights on would be the ones getting bombed. Thanks for your service I guess?


Good at least I would be safe.


Probably not, if your neighbors have their lights on decent chance you get hit when they miss your neighbors


Eh I have the means to move.

During Covid I had neighbors who refused to wear masks and spewed nonsense. One of them now can’t go outside because their lungs got rekt, another had to take a LOA for a few months to recover. I wore a mask and never got Covid.


Like the Pfizer mRNA vacvine, developed by BioNTech?


When you refuse to give your trial data to third party nations and you refuse to allow public trials in other nations, the third world will not trust you. This is why many, many nations like India went with their own vaccine variants instead of trusting Pfizer.

https://www.reuters.com/article/health-coronavirus-india-pfi...


OPs point was about internal cooperation, specifically between private and public. I think the vaccines demonstrated that, even if not internationally.


Say what you want about GPs point, but if you're suggesting that this is something that would have been better in the 20th century, you're flat wrong.

> you refuse to allow public trials in other nations, the third world will not trust you

It was about politics, not trust.


What is politics if not trust?


I think India went with their indigenous vaccine for a few reasons.

* They could not get enough foreign vaccines quickly enough.

* They have lots of biotech, relatively speaking.


Is it 'figured out' or is cooperation an emergent principle in democratically free societies? Many factors involved, but these kinds of society level observations are better ascribed to political bodies, rather than physical minds


A minor point of pedantry (sorry, I can't help my obsession with textual criticism): these are not transcripts; they are translations. I think I read somewhere that transcripts were made, but they were lost. I find it odd that the introduction says nothing about that. On the other hand, the introduction doesn't really say anything much at all about the provenance of the text. Or perhaps it does and I didn't look hard enough. If anyone knows more, please reply.


I don’t think that is pedantry. Translations are interpretations by a third party that may or may not have an opinion on the topic.


Surely more correctly, they would be translations of transcripts of recordings.


It's not clear to me if the full transcripts are available here but I found the book of transcripts at my college library during my studies and found it fascinating.

Looks like you can now buy it on amazon: https://www.amazon.com/Operation-Epsilon-Farm-Hall-Transcrip...


Of note, these are the translations of the transcripts. The original transcripts unfortunately were not preserved.


interesting aside: "wiseacre", a word in English which I heard when I was a kid, don't hear it so much any more:

wiseacre means "one who feigns knowledge or cleverness; one who is wisecracking; an insolent upstart." If you made a joke somebody might say "oh, a real wiseacre, eh?"

seeing Weizsäcker's name I was struck by the similarity so I thought I'd look it up, and turns out the two words have the same etymology: soothsayer, wise man

wiktionary From Middle Dutch wijssegger (“soothsayer”), from Old High German wīzzago, wīzago (“wise man, prophet, soothsayer”), from Proto-West Germanic *wītagō (“wise one; prophet”). Cognate with Old English wītga (“wise man, prophet”). See also German Weissager (“soothsayer, seer”).

https://en.wiktionary.org/wiki/wiseacre


Sorry to disappoint you, mate. Weizsäcker is much more likely to be an equivalent of Wheatbagger.

Weizen - wheat Sack - bag


i am disappoint! you're a good freund, bc you didn't choose this moment to teach me the meaning of schadenfreude.


Interesting coincidence that the German Weissager arrived at a similar meaning and sound. Its etymology is wissen (to know) - Sager (sayer).


> WEIZSÄCKER: I think it's dreadful of the Americans to have done it. I think it is madness on their part.

> HEISENBERG: One can't say that. One could equally well say "That's the quickest way of ending the war.”


Without perspective, it's easy to say that the bomb shouldn't have been used. Once one learns of the other details of the war, and gains perspective, it's obvious that it was going to be used.

We're still awarding the Purple Heart medals that were produced in vast quantities in WW2 in expectation of the invasion of Japan. (or so I've heard)


I listened to this >2h essay about the atomic bombing over a year ago. I'm writing mostly from memory, so there might be errors in my summary.

I think the argument was that the reason for the atomic bombing was not really a military necessity (fleet admirals Leahy and Nimitz at least seemed to think so). The Japanese were already signaling they were willing to surrender well before the bomb dropped -- but not yet _unconditionally_. The one condition they had was that the emperor had to stay in place and should not be punished for the war. The US could have chosen to accept this condition and end the war, but didn't for a variety of reasons (none of them military).

https://www.youtube.com/watch?v=RCRTgtpC-Go


> The one condition they had was that the emperor had to stay in place and should not be punished for the war. The US could have chosen to accept this condition and end the war, but didn't for a variety of reasons (none of them military).

The US occupation did leave the Emporer in place.


They did end up doing so, but they insisted on unconditional surrender regardless. Even though they knew that they would end up meeting the singular Japanese condition.


You are conflating two separate things. The Japanese were willing to stop hostilities before Nagasaki and Hiroshima, but only if they kept large chunks of China, the mandates, and Korea. In other words, only if their war gains and goals were recognized. After the bombing they were willing to surrender. Period. Contrary to popular myth, United States never made any formal guarantee that the emperor would stay in power. In fact, it was only because of MacArthur that he did so. All they committed to that allowed the Japanese to surrender with any minimal amount of face saving was re-iterating the long-held American position that people should choose their own government.


The Japanese were not willing to surrender even AFTER the 2nd bomb on Nagasaki: https://en.wikipedia.org/wiki/Surrender_of_Japan#Discussions...

The War Council would not approve surrender.

After the Emperor made his decision, there was a serious coup attempt to prevent surrender: https://en.m.wikipedia.org/wiki/Kyūjō_incident#:~:text=The%2....


It is unknown, and will forever be unknown, exactly which terms the Japanese would have agreed to in the event of an earnest attempt at a negotiated peace, because there was no earnest attempt at a negotiated peace. Truman was dead-set on achieving an unconditional surrender, mostly because of US public opinion.

But all in all, based on historical evidence and testimony, I find the case that, even without the bomb, Japan would have eventually surrendered on terms acceptable to the Allies the more convincing one.

> The use of [the atomic bombs] at Hiroshima and Nagasaki was of no material assistance in our war against Japan. The Japanese were already defeated and ready to surrender because of the effective sea blockade and the successful bombing with conventional weapons — Fleet Admiral William D. Leahy

> The Japanese had, in fact, already sued for peace. The atomic bomb played no decisive part, from a purely military point of view, in the defeat of Japan. — Fleet Admiral Chester W. Nimitz

> In 1945 Secretary of War Stimson, visiting my headquarters in Germany, informed me that our government was preparing to drop an atomic bomb on Japan. I was one of those who felt that there were a number of cogent reasons to question the wisdom of such an act. During his recitation of the relevant facts, I had been conscious of a feeling of depression and so I voiced to him my grave misgivings, first on the basis of my belief that Japan was already defeated and that dropping the bomb was completely unnecessary, and secondly, because I thought that our country should avoid shocking world opinion by the use of a weapon whose employment was, I thought, no longer mandatory as a measure to save American lives. - Dwight D. Eisenhower

> Based on a detailed investigation of all the facts, and supported by the testimony of the surviving Japanese leaders involved, it is the Survey's opinion that certainly prior to 31 December 1945, and in all probability prior to 1 November 1945, Japan would have surrendered even if the atomic bombs had not been dropped, even if Russia had not entered the war, and even if no invasion had been planned or contemplated. - 1946 United States Strategic Bombing Survey report


My feeling is that dropping the bomb was overall better than a land invasion, but I find the arguments against at least giving the Japanese a demonstration of the bomb - even just the footage of the Trinty test - beforehand fairly weak.

Yes, it's likely - given the Imperial Japanese military's overall disposition - that it wouldn't have been enough to cause them to surrender, in which case using the bomb on a target would be the next step. And yes, advance notice might have made those operations more difficult. But given the horror it unleashed on innocent civilians, I think the Allies had a moral obligation to try it.


> My feeling is that dropping the bomb was overall better than a land invasion.

Years ago I asked my buddy what was his take on dropping the bomb. He answered that when the bombs dropped, his dad was in Florida training for the invasion of Japan.

There's no snappy reply to that particular argument.


How about "it is the Survey's opinion that certainly prior to 31 December 1945, and in all probability prior to 1 November 1945, Japan would have surrendered even if the atomic bombs had not been dropped, even if Russia had not entered the war, and even if no invasion had been planned or contemplated." https://www.trumanlibrary.gov/library/research-files/united-...


Ah yes, the US Strategic Bombing Survey, how could they ever be unbiased in concluding that bombing people to smithereens inevitably leads to surrender. No, I'm disinclined to trust their opinion.

We in the modern day have the benefit of being able to pull examples from more than just WW2. Before WW2, the predictions of air power theorists were that strategic bombing would end wars before the powers could properly start mobilizing (look up Giulio Douhet, this was seriously argued). Japan in WW2 is the closest any example of strategic bombing has ever come to compelling a surrender, out of a dozen or so attempts. Its exceptionality is itself a suggestion that maybe bombing's role in Japanese surrender is perhaps inflated.


People also underestimate how much death came from our firebombing which would have continued, and would have come from blockade-induced starvation, relative to the nuclear bomb deaths.

It's not like the numbers would have been lower...


This is a fair criticism (although the generally accepted story is precisely that 'bombing people to smithereens' with atomic weapons led to surrender), but the evidence they based that opinion on is generally available. Having looked at it myself, I wouldn't have said everything they did with quite the same level of confidence, but I agree with their broad strokes opinion that it was most likely possible to achieve a Japanese surrender in a reasonable time-frame without dropping the atomic bombs or invading.

My sense of it is that there was a strong feeling of the need to punish the Japanese, quite apart from any military necessity. I think that, combined with the need to demonstrate the power of the new weapons lead to a reluctance to seriously engage with the Japanese diplomatically. I take as evidence of that the fact that a key sticking point in the surrender decision was the status of the Emperor, who ultimately wasn't removed by the US anyway. The allies could have made their terms much clearer much earlier, and they could have engaged with the Japanese attempts to seek peace much more. And of course there was the ongoing worry that the Soviet Union might gain too much if things weren't sorted out quickly.

From Truman's diaries at the time:

> Discussed Manhattan (it is a success). Decided to tell Stalin about it. Stalin had told P.M. of telegram from Jap emperor asking for peace. Stalin also read his answer to me. It was satisfactory. Believe Japs will fold up before Russia comes in. I am sure they will when Manhattan appears over their homeland. I shall inform Stalin about it at an opportune time.


Well, Bomber Harris is on record saying his strategy of terror bombing civilians in Germany was driven by revenge for the Blitz.


One of my relatives was in Korea staging to invade when the bomb dropped. It is very likely a whole branch of my family would not exist without the bomb.


It is also certain that many branches of Japanese families do not exist because of the bomb.


It is also certain that many branches of many families do not exist because of the war.

Blame those, who started the war, instead of those, who ended it.

Defenders can use anything, including weapons of mass destruction, to defend themselves. Attacking to with intent to kill even one person is crime.


> Defenders can use anything, including weapons of mass destruction, to defend themselves.

Not according to the Geneva convention. Targeting civilians is a war crime, regardless of who does it.

In many wars, both sides claim to only defend themselves, often both sides even claim to have been attacked first. Just look at the last few wars fought by the US for example. Under such a simplistic moral compass as you gave, they'd both feel justified to do anything.

> Attacking to with intent to kill even one person is crime.

Dropping an atomic bomb on a civilian center is attacking with intent to kill.

It is just not so simple.


Yes, wars are not simple. Fog of war may make it blurry, or enemy may fool each other. For example, soviets shelled their own territory in Finnish war, to pretend that they were attacked first, so they are defending. Russians are using same thing too: they blown up their own buildings to blame Chechen and then started second Chechen war, or, in case of Russo-Ukrainian war, they pretend that Ukraine will be swallowed by NATO and then European and American homosexuals will freely fuck Russian-speaking Ukrainian children, so Russians are invaded to protect Ukrainians!

However, this should not alter your moral compass. Those, who defend themselves, have moral rights to wipe the attackers or invaders.


I don't think there was much in the Geneva Conventions about targeting civilians until 1949 and the 4th Geneva convention. Maybe there was something about bombarding civilians from ships at sea.


I’m pretty sure morality and moral compass predate the Geneva Conventions, though. Just because it was not “sanctioned” doesn’t mean it was necessarily moral, and WEIZSÄCKER’s comment indeed shows it.


In the end all that matters is power. Words on a treaty mean nothing when it comes down to it, only their enforcement does.


Yeah no, I can condemn the usage of the bomb and calling the US a “defender” in the Pacific theatre stretches the truth considerably.


More probably exist because of the bomb. A land invasion would've killed an order of magnitude more Japanese, and of course plenty of Americans as well.


There is compelling evidence that they were gearing up to surrender.


Do you think Japanese civilians wouldn't have died in droves if the US military were forced to take the whole of Nippon street by street?


And now contrast that to all the families in Japan that do not exist because them.

War is ugly, strategic bombing never worked, proponents knew that (they saidnsouch in their own contemporary reports and statements, going as far as knowing strategic bombing of civilians was in deed a war crime). Nuclear bombs are a contiuation of of strategic bombing, and as strategic bombing goes, they were an unnecessary war crime.


Hiroshima still was a war crime.


As was Nanking and all the other cities the Japanese military destroyed.


Yes.


Uh huh, by which standard that Imperial Japan recognized and adhered to?


Why does this affect whether it is a war crime or not?

Imperial Japan committed numerous war crimes, whether or not they agreed that they were war crimes at the time. By the same token anything that was done to them should not be judged by what their own standard was.


> Uh huh

Acknowledgement that it was a warcrime.

> by which standard that Imperial Japan recognized and adhered to?

Admonishment to get some damn perspective. What was done to Japan must be evaluated in the context of what Japan would have been doing to American soldiers and POWs had America been forced to invaded Japan proper. That war was non-stop war crimes from Japan. Particularly perfidy, false surrender, which would have gotten huge numbers of Japanese civilians killed in any case. Truman made the right call, for America and for Japan.


Two wrongs don't make a right?

Why can't we admit that the Allies committed their own war crimes and move on?


I have admitted that the Allies committed war crimes, so why aren't you satisfied? Why are you upset that I insist on pointing out that the Japanese did so as well?

If American war crimes are worth mentioning, then so are Japanese war crimes. Wanting to discuss one without the other isn't reasonable. What you are asking for is the erasure of context, and to that I say No.


Ego mostly, I guess its harder to be righteous and above others if you have some dark spot in your history. Also, some folks don't like complexity of real world so black and white is what they want, and obviously being on good side.


>> Truman made the right call

Hiroshima still was a war crime.


In context though the allies didn't see the difference. Missing from this account is that Japanese civilians were being continuously bombed. More died in the Tokyo firebombings then Hiroshima.

There's also the practical problems: how would you do it? How would you give the demonstration? How would you deliver the tape? And why would Japan believe an enemy claiming to have a superweapon? It'd be kind of like North Korea sending a film of why the US should now surrender because of their new space laser.


As I suggested already: whether the Japanese believed them or took it seriously is moot. Giving them the opportunity to surrender in response to the bomb helps shift moral blame onto them.

Whether the Allies cared much or not is also moot in terms of what they should've done, morally speaking. Clearly my opinion is they didn't care enough. Clearly I find the firebombings morally disgraceful as well. Clearly, at least some people involved in the decision cared a little, as several people did lobby for a demonstration. The US also was known to airdrop pamphlets encouraging civilian evacuation of cities; civilians weren't a total non-concern.

It's not anything like North Korea threatening the US with a space laser. For a multitude of reasons: US spy capability means they would know well in advance the details of any North Korean space laser. North Korea isn't an alliance of the most powerful nations in the world with leading scientific and military capability. And if North Korea did indeed demonstrate a space laser that could obliterate a city in a fraction of a second, you'd better believe the US would stand up and take notice, for that matter.

Moreover, at the time an atomic bomb wasn't science fiction. Everyone at that point had known that an atomic bomb was possible for decades; both the Germans and the Japanese were trying to develop one. Given that, if the Americans said, "we've succeeded in developing one and intend to use it to destroy your cities unless you surrender", along with a demonstration of in action, it wouldn't be unthinkable that the Japanese would take it seriously - nor would it be particularly different from the Potsdam Declaration, which demanded surrender lest they face "utter destruction" without any specifics, which the Allies did indeed think was worth saying.

Delivering a reel of film would have been straightforward; even in total war all communication channels aren't cut off. If you want to do a real-world demonstration that can be observed, find a place to detonate it where it will be observed but will do minimal damage. The Manhattan Project involved solving many, many problems; this is just another one, and a relatively small one at that. When confronted with a problem, you figure it out.


> North Korea isn't an alliance of the most powerful nations in the world with leading scientific and military capability.

> Moreover, at the time an atomic bomb wasn't science fiction.

After the original Hiroshima bombing the principle reaction of the Japanese government was surprise. The Japanese were well aware of the idea of nuclear weapons, but believed they would be impractically large like the Germans did - i.e. on the order of 10 tons of uranium needed for one bomb, and were surprised the US had that much.

> And if North Korea did indeed demonstrate a space laser that could obliterate a city in a fraction of a second, you'd better believe the US would stand up and take notice, for that matter.

But again: what would make the US believe it? Footage of the thing? Camera trickery was known in 1945. Firing it at field? You can fake that by pre-planting explosives/incendiaries. With modern technology the US might be able to observe the satellite, the laser, and the damage altogether but with the technology of 1945 how would any of this have been communicated?

> The US also was known to airdrop pamphlets encouraging civilian evacuation of cities; civilians weren't a total non-concern.

> if the Americans said, "we've succeeded in developing one and intend to use it to destroy your cities unless you surrender"

The Potsdam declaration[1] said what was coming, just not the scale.

The US also dropped pamphlets on Hiroshima telling civilians to leave[2] and showing pictures of the first detonation. They were ignored.

[1] https://www.ndl.go.jp/constitution/e/etc/c06.html

[2] https://ahf.nuclearmuseum.org/ahf/key-documents/warning-leaf...


You're misunderstanding a few things about those leaflets (which isn't entirely your fault, that page is very poorly written).

My understanding is that the "LeMay leaflets" were dropped on Hiroshima - and many other cities - but they didn't say anything specific about the bomb; just that America was bombing cities and encouraging civilians to flee. But, as we know (and they knew), America was already bombing Japanese cities - there wasn't any indication anything "special" was coming. The pamphlets actually excluded Hiroshima from the list of cities that might be bombed (with the caveat that the list was incomplete). Civilians were on edge, but often couldn't leave for various reasons, trusted things like air raid sirens, believed that their distance from military targets kept them relatively free from danger, and so on. This is documented in the essential "Hiroshima" article by John Hersey.

And these warnings weren't entirely ignored - Hiroshima's population before the bombing was substantially smaller than it was before the war, in large part because many Japanese civilians who could had fled cities.

The "Hiroshima pamphlet" - the one depicted - was not dropped on Hiroshima. This is apparent if you read the text, which describes Hiroshima as already destroyed; or the fact that it shows an image of the explosion over Hiroshima, not the Trinity test.

This [0] Reddit link - which I found by googling about the LeMay pamphlets - goes further to claim (and support, in the links) that even those weren't dropped over Hiroshima or Nagasaki. IIRC this contradicts Hersey's reporting, FWIW.

(Incidentally, based on the username, that Reddit comment was probably written by someone cited in your link. Either that or it's an eerie coincidence.)

[0] https://www.reddit.com/r/AskHistorians/comments/8rgyky/comme...


If the Tokyo firebombings were more deadly, doesn’t that mean that was less moral than dropping the bomb?


I'm not sure what in my comment you're specifically referring to, but...sure, I'll bite.

Let's split hairs. The Tokyo firebombings killed, per Wikipedia, 80K-130K civilians, depending on your estimate. Again per Wikipedia, Little Boy killed 70K-126K civilians, as well as an additional 7K-20K soldiers and 12 American POWs. Given those numbers, rather than "more deadly" I'd prefer to say "just as deadly".

You're far from the only one in this comment thread to do this, but...I don't understand why the fact that the firebombing of Tokyo was approximately just as deadly as Hiroshima is supposed to somehow absolve Hiroshima. Most people who think Hiroshima was a war crime also think Tokyo was a war crime. The way I prefer to approach moral analysis, personally, isn't especially utilitarian - once we start splitting hairs about which war crime was more or less moral I can't help but feel like we might've lost the plot.

Now, with that aside, we can play some games here. Tokyo was (and is) a city an order of magnitude bigger than Hiroshima; 100,000 dead in Tokyo vs. 100,000 dead in Hiroshima means, in a sense, the attack on Tokyo was an order of magnitude less vicious. Maybe "viciousness" of an attack isn't especially meaningful on its own - if the US bombed the middle of nowhere to make a point and only a handful of people died it definitely wouldn't be as evil, even if the strength of the attack was the same. But this did have practical consequences - the infrastructure of Hiroshima to deal with the situation was demolished utterly. This meant no health care or support for any survivors - supposedly exactly one doctor was left uninjured. People were just left to suffer for days. In Tokyo there was still some health care available, there were still some support networks; because the destruction - awful as it was - was so much less complete, there was a much better chance that survivors could lean on friends or family for support. So the suffering of the survivors in Hiroshima was much greater. In this awful utilitarian Olympics of evil, the atom bomb takes a point.

There is, of course, the issue of radiation sickness. We do intuitively feel that, regardless of the particular numbers involved, chemical or biological warfare is a red line that musn't be crossed. It's one thing to blow people up, it's another thing to poison them - or give children cancer, as the case may be. Truman himself felt that way - although the scientists at Los Alamos had some idea about radiation Truman didn't, and some believe he might not have approved using the atom bomb if he'd known [0]. In that light, Hiroshima was definitively less moral than the firebombings.

And I guess it's worth stating that the truly deadly firebombing of Tokyo, Operation Meetinghouse, didn't come out of nowhere. The US had been bombing Japanese cities for three years. Operation Meetinghouse wasn't a surprise; it wasn't the first bombing of a Japanese city, it wasn't the first firebombing (that was in Kobe), it wasn't even the first firebombing of Tokyo (which happened a month prior). Since my argument here has been primarily "the US should have given the Japanese an understanding of their capabilities and given them an opportunity to surrender in light of them", I think you can make the case that they had with Tokyo in a way that they hadn't with Hiroshima, and that - at least by my own standards - that makes Hiroshima far more morally problematic.

[0] https://blog.nuclearsecrecy.com/2012/10/18/who-knew-about-ra...


Thanks for the thoughtful response.

I’m more wondering aloud whether the option to surrender is just tacitly always on the table during war.

If the allies had said ‘we will firebomb Hiroshima unless you surrender’ it might almost seem like a meaningless endeavor since it’s hard to draw the line when you should alert your enemy of your next military action since ‘surrender’ is (probably) always tacitly assumed an option.

In this sense, giving an enemy an option to surrender (again) seems moot on the moral framework of ‘we are at war and will continue to bomb until the enemy officially surrenders, since we both know it is always an option.’


But the US had already destroyed multiple Japanese cities through firebombing and killed ~900k civilians. How would the threat to destroy one of the few surviving cities left have any creditability at that point?


What do you mean by "credibility"? By the definition as I understand it, "believability"...I don't see how the current war situation would affect that. If the US had destroyed many cities already, why wouldn't the Japanese believe that they'd be willing to destroy more?

If you mean something like, "why would the threat to wipe out a city have an impact?"...I mean, clearly it did, because it led very quickly to surrender.


In principle, this makes sense.

But if you look at Japanese leadership at the time, even after two bombs were dropped, the military leadership still didn't want to surrender. So a demonstration likely would not have achieved anything.

Japanese leadership was zealous in the extreme, at a level that is difficult to understand from a modern perspective. The difference between Japan then and Japan now is an order of magnitude larger than the difference between America then and America now.


but I find the arguments against at least giving the Japanese a demonstration of the bomb - even just the footage of the Trinty test - beforehand fairly weak.

An enemy that doesn't surrender until you drop two atomic bombs on them was probably not going to surrender if you set one off in an unpopulated area as a demo.

I mean, I'd run up the white flag after being nuked once. You wouldn't have to tell me twice.


The US only had enough material for 3 bombs. It would have been a big gamble to drop one on empty land.


Maybe in short order, but wasn’t the US well on its way to industrializing the entire pipeline?


Consider how many people were dying EVERY DAY during World War 2. Sure, they may have been able to industrialize, but the world was in the midst of experiencing death on a scale we can't even really imagine today. The pressure to end the war must have been enormous. Which isn't to say that it was an easy, or even correct, decision, but we can't really do a simple calculation of "well they could have waited a few more weeks/months" and get a feel for the gravity of the situation.


Paul Fussel had something to say on that topic in the essay "Thank God for the Atom Bomb":

https://www.uio.no/studier/emner/hf/iakh/HIS1300MET/v12/unde...


Something that I've wondered - a kind of weakly held theory that, from various references, seems plausible - is:

The US military betrayed the trust of many of the scientists and engineers who worked on the atomic bomb, by not doing a demonstration of the bomb first for its enemies, before dropping the bomb on civilians.

I watched "Adventures of a Mathematician" yesterday which really, really dwells on Ulam's reluctance to work on a weapon of death. There is a dramatized scene there of how upset many of the scientists were, that the bomb was dropped without a demonstration. The movie is based on his memoir, and based on that, it really seems that the 'deal' that many of those scientists took, was something like a) we'll work on an atomic bomb so Germany won't get it b) but we won't use it recklessly, it'll be demonstrated first.

Now of course the military didn't promise that in so many words, but that seems to have been very strongly understood, and the fact that the bomb went directly to killing people seems like a violation of what so many of the people who made that bomb possible, expected.


They knew what they were doing, or should have but were lying to themselves. Even if some of them got verbal contract pinky promises when they signed on, all of them knew they were building a bomb which would be given not just to the current government but to future governments as well. It would take profound willful naivety to believe they had any meaningful assurances whatsoever.


What moral obligation? The same that the Japanese gave the Chinese at Nanking?


The brutality of the Japanese military didn't mean innocent Japanese civilians deserved to suffer or die.

I don't know what nationality you are, but I have no doubt that members of your country's military - very possibly within your lifetime - have committed atrocities, even if not at the same scale as in Nanjing. Do you feel personally responsible or deserving of retribution?


This is not a throw-away comment. It is exactly why the US did not want to face the Japanese on the main island.


There was already horror among the civilians, with the firebombing of Tokyo alone causing 100K casualties.


Ah, so we already killed hundred of thousands of innocent civilians, so of course it is ok for us to kill a some more? Not sure that this is a solid argument...


>Once one learns of the other details of the war, and gains perspective, it's obvious that it was going to be used.

That doesn't prove that it should have been used. It was also not a given even a year earlier. If Henry A. Wallace had remained Vice President, it's likely his lack of antagonism towards the Soviets would have led him to avoid the show-of-force that the bombings were. The moment separating 150,000 Japanese civilians from life and death is the one where the DNC went behind the backs of the American people and chose Truman, chip-on-his-shoulder and all, to be FDR's last running mate. We're still paying for that bit of hubris.


But they used two bombs. Wouldn't one have been enough to end the war?


It's not even clear in retrospect; the minutes of the Imperial war cabinet show they were confused as to what was going on after the first bomb.

Note that there was a third bomb scheduled and in preparation and it was decommissioned and returned to Los Alamos.

Also note that the conventional bombing of Tokyo just a few months prior caused greater destruction and loss of life.

Evaluations have to be made in context, which is very hard. There was a lot of anger and pain on both sides, which lead to irrational "momentum" in prosecution of war. Also there is the logic of industrial warfare: look at Europe: many smaller German cities were bombed for the first time just in the the last month of that war, because a huge machine had been switched on that just kept emitting planeloads of bombs which had to be dropped somewhere.

There is a thoughtful discussion of this topic by Tooze from just a few days ago: https://adamtooze.substack.com/p/chartbook-230-burning-hambu...


Dresden...

The Germans did terrible things, but the allies definitely did not have the moral high ground on all fronts. This is for me the horror of war: that because of one side losing its humanity the other side will too.


Dresden was as legitimate a target as any other city. Its factories made, among other things, precision optics for bomb sights.

Dresden being a purely civilian target is a myth.


Yes, and precisely the large industrial areas of Dresden were not targeted but the inner city with lots of civilians was.

Note that I have no love for Nazi Germany, my family suffered tremendously at their hands and the results of that are still felt today. At the same time: I am categorically against indiscriminate firebombing of cities leading to 20K+ civilian deaths and if you feel that those civilians were a legitimate target because they happened to be in the city then you and I are probably not going to have a very productive discussion.


There were military factories in the city center also.

What I'm saying Jacques, is that the issue is nuanced. I encourage you to read Frederick Taylor's excellent book on the subject.


I've read that already (note: history is written by the victors) as well as a whole pile of other books on war (WWI, WWII) and ethics, rules of engagement and so on. My takeaway is that if you want to be able to take the moral high ground as a nation state you play by the rules even if that gives you a disadvantage on the off chance that you win the war. Because if you do you will end up with a more broken world than the one that you had before and now you have no tools to fix it without being labeled a hypocrite. This is all pretty complex stuff and not worthy of treatment by comment (books would be more appropriate) but that's how I feel about it and I don't think that it is going to be a trivial affair to move me from that position.

It also informed my stance on how I perceive war and my own possible role in it: I would definitely find myself mobilized (financially, personally) to help defend countries that are overrun by obvious aggressors, including my own but I would under no circumstance allow myself to be roped into a war of aggression up to the point where I would be happy to go to prison or worse if it came to it. This is not trivial stuff and I have so far been fortunate enough not to have seen this put to the test in a practical sense.

I know Dresden was not a purely civilian target, but civilians were fairly explicitly targeted, either that or you'd have to chalk that all up to extreme sloppiness, which is not a case that anybody credible has ever made.


>I know Dresden was not a purely civilian target

I feel like we're pretty much on the same page, then.


I really don't know why all the people defending strategic bombing of civilians, targeted at civilians at that, ignore all the contemporary documents from the people doing it, Harris, the RAF, USAAF and so on, clearly showing they knew already back then that a) it was a war crime and b) didn't even have remotely the effect they used to sell it in public (namely destroying enemy moral to the point the enemy surrenders).


How many would be civilians who were drafted to be soldiers are you willing to sacrifice so that you don't kill 'civilians'? If you are talking professional armies it is one argument, but when you are talking civilians that have been dragged into a conflict their nation did not start are they 100% not-civilian simply because of circumstance? Being a drafted non-aggressor army should also be part of the consideration in my mind.


We're talking about people that were at zero risk to be drafted as soldiers. You can put civilians in quotes but these were actual civilians. Boys too young to be drafted, women, girls, babies... Targeting them was a huge mistake, especially because that ordnance could have been put to far better use a few kilometers away, 30 seconds flying time.


Are there any "pure" civilian targets then, or is absolutely anything a legitimate military target? Was that pizzeria in Kramatorsk a legitimate military target because, as Russia claimed, soldiers were among those eating there?


>Are there any "pure" civilian targets then, or is absolutely anything a legitimate military target?

Welcome to the fundamental ethical dilemma underlying the debate around the Total War concept.

I don't claim to have all the answers.


I think the debate as such is around insurgent warfare, where you're not fighting organized, unformed armies so much as bands of militias and guerillas, and the line between combatant and civilian is entirely transactional.

Total war stopped being a thing once it became certain the next one would lead to global nuclear annihilation.


At least in terms of international law this debate has been over for about a century when you are fighting a uniformed military.


There's a difference between bombing factories and doing firebombing intended to raze the city as a whole.

As Mcnamara himself says in the documentary interview Fog of War, proportionality is a concept in warfare.


If what Russia is doing to Kyiv is impermissible in war, then what the allies did in Dresden was certainly not permissible


From the wikipedia article on the surrender broadcast:

As many as 1,000 officers and army soldiers raided the Imperial Palace on the evening of 14 August 1945 to destroy the recording. The rebels were confused by the layout of the palace and were unable to find the recordings, which had been hidden in a pile of documents. The two phonographs were labelled original and copy and successfully smuggled out of the palace, the original in a lacquer box and the copy in a lunch bag. Major Kenji Hatanaka attempted to halt the broadcast at the NHK station but was ordered to desist by the Eastern District Army.[2][3]

Even after two were dropped members of the armed forces still wanted the war to continue.


Even after two bombs were dropped, and the Russian declaration of war and invasion of Manchuria, and the decision of the Emperor!


After the coup failed, Hatanaka shot himself. Many others did the same, and some were hung following war crimes tribunals. These people knew exactly what Japan had done under their leadership, and presumably assumed that surrender meant death.


Elememts of the armed forces. As elements of the German armed forces were willing to kill Hitler, but not all of them.


One bomb may not have been enough evidenced by the fact that even junior level officers attempted to thwart the surrender. One bomb might have been enough. The decision to drop the second one was not entirely unjustified since the Japanese government was, apparently, in no hurry to end the war after the 1st one was dropped.


The question of the role of the atomic bombs in compelling Japanese surrender is one that is still debated among historians to this day, and will continue to be debated for as long as I live.

The indisputable fact is that Japan had thoroughly lost the war at that point--it was either losing or had already completely lost in every theater. I tend to think that the atomic bombs played a big role in the decision to surrender in that it showed that the Americans were capable of devastating entire cities with a single bomber: air defenses are unlikely to score any hits against a single bomber unlike a large fleet of bombers carpet bombing cities into oblivion, robbing Japan even of the chance to die in a blaze of glory.

But this also raises a tricky moral question. The decision to end a war is not made by the victor but by the loser. What should you do if the loser refuses to admit the loss?


By the time the atom bombs were used the 60 or so major cities in Japan had been destroyed by the firebombing. Whether it was done with one bomber or dozens didn't really matter. Japan didn't have the capacity to stop either at that point.

On the Japanese side there were multiple factions. Everyone in leadership understood the war was lost, but a large fraction still had hope of making things costly enough for the US to negotiate a conditional surrender that preserved the Emperor.


From what I’ve read I think the japanese strategy, from the very beginning was to bleed the americans. They new they couldn’t compete with the US industrial strength, even before perl harbor. The idea was that if they killed enough soldiers and “showed horrors” to enough of them, then the US public would falter and withdraw.

Because you know democracies are weak and monarchies are strong kinda thing.

There was a real feel of “we’ll be a 110M martyrs, before japan surrenders its land”. And as vietnam war later showed us, a strategy like this can potentially work.

The bombs I think showed that the US appears to have the ability kill those 110M people without setting foot on the island.

Nobody can predict what would have happened without the bombs, it was a very complex situation, but after listening to dan carlin’s Hardcore History account of the pacific war, I’d say I’m convinced they played a major role for sure.


The only slight correction I would add here is that the Japanese were not playing to win the war at this point. They were simply playing to not lose. Their calculus was that they could inflict enough casualties on invading forces that any surrender would take into account them, continuing the whole China, Korea, and all of the other Pacific islands that they had seized. casualties were not a bug, they were a feature.

This is what all of the constant debates on hacker news failed to take into regard. If you look at the correspondence and the commentary of the people making decisions, it is quite clear that prior to the atomic bombing, the only side that was trying to minimize casualties was in fact, the United States. In fact, even on the allied side, neither Russia nor the United Kingdom, were particularly concerned with minimizing casualties. Since Stalin felt that he would gladly trade Soviet lives in favor of land that he could hold after the war, and the United Kingdom government was determined to make an example to justify their occupation of Asia .

It’s also worth noting that Nimitz and King, were proposing a path that would’ve led to an order of magnitude more death than either an invasion or the atomic bombs. A fleet blockade of Japan would’ve starved everyone in Japan.


Keep it up until they cry uncle.


Did the first one end the war?

Did the second one end the war?

Did the first and second ones prevent the next war?

I'm not sure of the answer to these questions; they're obviously important and difficult to answer. The timing certainly hints to "no, yes, maybe" but we're not going to get a do-over.


The last one seems to be 'for now', but it may not hold.


But we have had nearly 80 years of peace between major powers and that has not happened since there were major powers.

Ok you get many indirect wars e.g. Ukraine, Vietnam, Korea much in Africa but not ones that could escalate to World War levels.


If it doesn't hold we won't be able to continue the conversation so I hope that we can extend that 80 years. Proxy wars are still wars though, and proxy wars always have the possibility of escalation built in to them.


Historically cold war proxy wars were unlikely to escalate as even when a major power had troops on the ground it was on behalf of another country and also we seem to have had sensible leaders.

Ukraine does differ as a major power is involved in its own name.


And Russia seems to not have a sensible leader.


Ukraine definitely does not have a sensible leader. In 2021 he declared both that "he does not like the Minsk agreements" and that "Ukraine needs to obtain nuclear weapons". After the start of the war, he insists that Ukraine be allowed to join NATO, which would automatically mean World War.

Alright, from his point of view, perhaps this is sensible: Ukraine stands to lose otherwise, so for him the World War might be preferable.


Ukraine's probably not going to join NATO. Obviously they really want to but it's hard to imagine a future where both Russia and Ukraine don't retaliate against even non-government and uncommanded (i.e. soldiers fire without authorization) attacks that go back and forth across the border.


You're hilarious.


This is a question with no answer, but even with two parts of Japan's military tried to stave a couple to ensure the war would continue. Either way, even if dropping the second bomb only decreased the likelihood that an invasion of Japan was necessary or only shortened the war in China by a few months, it was worth it in human lives saved.


I don't know about that. It brought nuclear weapons into the world in a way that I'm not sure we could have done without. The answer that the question of whether or not that was ultimately beneficial will quite possibly not stop with the end of World War II, but may well carry over into the beginnings of World War III.


Empirically no, since Japan didn't surrender after the first.


A book I read way back in the 70s quotes Groves as saying that one bomb could be seen as a one-off but two bombs would make the Japanese think there's more to come.


Possibly but the idea was to demonstrate that the allies had more than one bomb. It might have been possible to just make enough fissile material for one weapon, then take another 2-3 years to make a second one. In that case if you're Japan you don't need to surrender.


They used two because they had two different designs, and they wanted to test them both on real targets.

They purposely chose purely civilian targets, in order to inflict maximal civilian casualties. If this is not morally wrong, then nothing is.


Not true.

I lean towards it being morally wrong to target civilian areas, but to claim ahistorically that the targets were intentionally purely civilian is false. Being of military importance (military post, arms manufacturing) was a requirement of the choice for both cities. Both had military significance.

But it was a tragedy. Even if you think the decision to drop the bomb was defensible, no one’s conscience should be at ease when making such a terrible decision even if you feel like you’re forced by necessity. Which I don’t think was necessarily the case.

https://www.nationalgeographic.co.uk/history-and-civilisatio...


Hiroshima and Nagasaki were not military targets, unless you define every urban center a military target, by virtue of its productive capacity. Once you do that, the entire idea of separating civilian and military targets becomes an absurdity, and you might as well admit that you consider "enemy" civilians to be fair targets.

Historically, the major reason why the US targeted Hiroshima and Nagasaki was that the US military wanted to test its two bomb designs on large, pristine urban centers. Attacking pristine targets made measuring the effects of the bombs easier. If Hiroshima and Nagasaki had been significant military targets, they likely would have been bombed much earlier. In a perverse way, they were chosen because they weren't military targets.


The claim was "purely civilian," which was false. End of.


It was as close to "purely civilian" as anything could get. A large city with no particular military value, whose urban center was explicitly targeted (rather than any particular industrial site).


By that time, 1945, no city, or town, of any of the beligerents was "purely" civilian anymore. Doesn't excuse the deliberate killong of hundreds of thousands of non-combatants so.


I’m not. One of the criteria was that it had to have at least SOME military significance.


Hiroshima wasn't a major industrial or military target: there was a military base on the edge of the city, but only about 10% of the civilians killed were military workers. Nagasaki is a better example, and the bomb did hit industrial targets. However, this is mostly an accident -- the primary aiming point was the residential center of the city. Bad weather forced the crew of Bock's Car to choose a secondary target, which happened to be located away from the residential center.


This is a simplification that doesn’t really work. Japan decided as part of their war economy to decentralize their war industries to protect them from bombing - literally putting furnaces into small urban and rural environments rather than centralizing production as all the other powers did. This is why they failed to accomplish real industrial scaling during the war.

As the old line goes - in jungle fighting, the Japanese way of war was to fight in the jungle. The Brit’s way of war was to go through and around way the jungle. The Americans simply leveled the jungle.

That’s why the Japanese strategy didn’t work. That decentralization became a liability even before the cities were destroyed and why you can’t divide Japanese cities into civilian and military targets.


This is more or less verbatim the justification given in US public messaging around the bombing of Japan’s cities, and it’s heavily reiterated by Rhodes. The problem is that even if you fully accept the bloody logic of this, it wasn’t what the Interim committee specified for the atomic bomb target list: “the most desirable target would be a vital war plant employing a large number of workers and closely surrounded by workers’ houses.” This didn’t apply to Hiroshima. It did apply to the secondary target used in Nagasaki, but not to the primary target. The fact that more appropriate targets were passed over in favor of (largely unbombed) residential targets is not some unfortunate necessity of the war, it was a deliberate decision made to show the world how powerful the bomb was. That decision might - in the very long run - have saved more lives than it took. We should talk about that. But we can’t talk about it if we’re busy fooling ourselves.


We were running out of unbombed cities to drop the nukes on. They wanted to see the full effects of only the nuke. They had to request for a few spots to be saved for them even.


In your morals perhaps. If you were to run a utilitarian calculus, bombing such a target could deliver the most morally optimal solution. If the war had not have ended, the Japanese could have continued to potentially kill millions. The bomb was a clear and final “you cannot win if you continue to wage war” that they came to accept. The Americans could have as easily dropped it on Tokyo.


Hiroshima and Nagasaki were both industrial centres involved in the production of war material.

By the technology of the time (precision weapons were half a century away), they were absolutely valid targets.


First, by this argument, literally every urban center is a military target. Put another way, it's an argument for total war, in which nothing is off limits, and every "enemy" civilian is fair game. Is that the world you want to live in?

Second, the US did not target any specific industrial areas of Hiroshima and Nagasaki. In each case, it targeted the center of town, with the goal of inflicting maximum destruction on the city as a whole.


> First, by this argument, literally every urban center is a military target. Put another way, it's an argument for total war, in which nothing is off limits, and every "enemy" civilian is fair game. Is that the world you want to live in?

Industrial bases, military bases, centers of government: these are all legitimate targets in a time of war and all are built in and around cities. The difference today is we have precision weapons so they can be reasonably targeted accurately, and the side-benefit is that night-vision capability favors night-time strikes which minimizes the number of civilians around.

But don't delude yourself into thinking that there's any such thing as a "clean war". It's a war.


The idea was to show that the US had an endless supply.

Of course we only built two, but the Japanese didn’t know that.


It was just a matter of time, right? The US had the ocean by that point, so presumably we could have just bottled them up on their island and then take our time making more bombs.

Grim stuff. As horrible as the war was already, glad it didn’t come to that.


As someone whose grandfather was fighting in the Pacific, looking back sure seems easy to judge but there are no guarantees and in the horror that was WWII you don't really take risks 'because'. You ensure victory. My grandfather was forced to call in flamethrowers on other human beings that would not come out of tunnels. He never forgave himself for that. Was he a monster? Should he have told his supperiors to stall out their plans, maybe wait the guys out instead? He was part of the occupation and saw the damage the bombs did first hand, helped cleanup the damage, but he never doubted the need to end the war or the way it was done. But glad you looking back figured out a better way by volunteering to let my grandfather 'bottle them up'.


I wasn’t proposing a better method to end the war (sieging the island wouldn’t have been a tidier or more humane end to the war anyway, it would have probably involved mass starvation, etc); I was just pointing out that “only two” was not really a limit in any practical sense, it was at least as many as were needed.


I had grandfathers on the Western and Eastern front in Europe. Them being there doesn't mean they had any real idea of what they were doing and what was going on. Beyond short term survival that is.


Three


Didn't they have the goods for roughly four? Trinity, Hiroshima, Nagasaki, and the demon core.


Yep, I only counted the ones intended for Japan. The demon core was finished a few days before Japan's surrender, but never shipped to Tinian base for assembly. Iirc they would've been able of making three bombs per month.


I might be misremembering but I think the ribbons are new but the medal itself is the original new ones


Japanese command conveyed surrender offers through Macarthur months before the battle of Okinawa. The terms they offered were substantially the same as what terms America set upon their final surrender- full surrender, but with the institution of emperor remaining intact as a puppet of the American occupation government.


It's still easy to say that the bombs shouldn't have been dropped, for one because it's a war crime and indiscriminate murder of civilians.

Just ask what if a country that did it lost the war. People would probably be put to death just for this in Nuremberg.


Forcing people to take the covid vaccine violated the Nuremberg code. Do we see anybody on trial for that? It's never what you do, it's who has the power to hold you accountable.


Who was forced to take the covid vaccine?


> what if a country that did it lost the war

That's not even a counterfactual. That's nonsense.


Salty downvotes are delicious. Tears from people who can't explain how a power could have developed and deployed the bomb first but not won the war.


I didn't downvote you, but in this very article itself that these comments are discussing, the German scientists talked about how it's possible that even if Germany had developed the bomb, perhaps all they would've been able to do is destroy London and a few other cities but still lose the war.


No one needs to explain it because it's irrelevant. It's about that winning does not make war crime or crime against humanity magically stop being war crime or crime against humanity. To reduce to absurd for the sake of example, if US develops a weapon that allows it to kill the entire population of China and uses it in a war then US can't possibly lose that war but it would still be an unthinkable crime against humanity and the punishment should be appropriately severe (it's an absurd example so I can't even think of what it could be, probably US should stop existing or the entire government be put in whatever the IRL equivalent of Azkaban for lifetime).


But who prosecutes the winners? Answer with irl examples; while I agree about the shoulds and oughts, how has it been and how is it really?


Who prosecuted the US for Hiroshima and Nagasaki bombings?


I wonder if the horrific aftermath of the atomic bombs dropped on Japan prevented later usage of nuclear weapons.


Have there been any since? I'd say the devastation shocked even those who pulled the trigger


I'm not sure you can differentiate the horror of what actually happened in Japan with the existential threat posed by the proliferation of thermonuclear devices immediately after the war.

If the threat stayed in the small-kiloton range, I think we'd very likely have seen them used again -- especially if one nation had a monopoly on such weapons.

But that's just a supposition; in the real world, we went from "there are two bombs, and we used 'em on Japan" to massive proliferation of weapons orders of magnitude stronger by opposing superpowers in a really really short period of time.


The bombs we dropped were literally beta versions. It's been 80 years of development and testing - I don't want to imagine what's possible today.


I was surprised to learn, in the wake of online discussion after the release of OPPENHEIMER, that the weapons on hand now in the US (and assumed in the former USSR) are actually much SMALLER in yield than what was on deck from the late 1950s through the mid-1970s.

The Nagasaki bomb was ~ 22kt.

We (the US) built a 500kt fission-only bomb (the Mk. 18), so 20x that power; that was thought of as the functional ceiling for a simple atomic bomb.

But then came Teller-Ulam and the mk 17 thermonuclear bomb (no, I don't know why it's a lower number; maybe they started over with the thermonuclear devices?), which came in at 15,000 kt. A linear-scale graph showing Trinity, the Mk 18, and this bomb is hilariously inadequate; it's an object lesson in how warping it is to consider enormous numbers.

But with more precise delivery, and a large shift to multi-warhead ICBMs, the actual individual device yield shifted downward. There wasn't a need to fudge your margins with huge bombs if you could be reasonably certain of hitting a given target. Further, hitting anything with 15,000 kt would be absurd overkill unless your whole point was to wipe out an entire population center.

The biggest active US bomb is the B83, at about 1250 kt, or an order of magnitude less than the Mk 17. It's a gravity bomb, ie, requires a bomber. The bulk of the arsenal is, I believe, still tied to ICBM delivery, and hover under 500 kt per warhead (W88 in the Trident II; W78 and W87 in the Minuteman).

At first blush, the idea that we aren't arming ourselves with 15,000 kt weapons anymore SOUNDS good -- except analysts worry that less terrifying yields makes them more likely to use.

I'm paraphrasing from an excellent Twitter thread from nuclear weapons policy & history analyst Andrew Facini at

https://twitter.com/andrewfacini/status/1683549901353787395


Yeah, it effectively demonstrated to Stalin we’d have no problem dropping it on Moscow and Saint Petersburg.


The US government didn't drop the bomb to avoid a violent invasion. They were half-sure they might get an easy surrender anyway.

They needed to show the Soviets what they could do. It was 100% a demonstration. The Soviets knew about it of course, but no one had really seen what it could do.

And if it helped end things early enough that the Soviets didn't invade themselves and partition Japan as they were already starting to do in Germany, then that was a bonus.

Whether it was morally sound to use it to intimidate Stalin is another question entirely, and I don't know what the answer is. But let's not pretend that it was some balance sheet calculation about how many lives would be lost... it was never that.


This is a conspiracy theory people like to spout when they want to seem like they really understand realpolitik, or because they just can't comprehend the US not having an ulterior motive behind everything, but all of the actual documentary evidence from the time says otherwise.


> This is a conspiracy theory

In what sense? It required no conspiracy at all. You might call it a political science theory... but only in the sense that the theory explains much more than others and is easily corroborated.

Just because you find an explanation distasteful, it doesn't make it a "conspiracy theory", and jumping to that label shows how poorly you argue.

> or because they just can't comprehend the US not having an ulterior motiv

The United States isn't a person. It can't have a "motive". It's a large group of people, a group with ever-changing membership. Each of those people can actually have their own motive, and many of them will have multiple motives.

But, at least in that era, you didn't have many people high up in the US government that had stupid motives. They were aware of overtures of surrender well before it was dropped. They were aware that it was unnecessary to force surrender, or at the very least that it wasn't their only option to force surrender without a ground invasion.

The Soviets were already the real problem. Indispensable while Germany was curb-stomping its way through Europe, but disgusting enough that there were elements in the government and military that wanted to fight them next.

It was necessary for the Soviets to see the bomb and what it could do. This was more necessary than it was to force the Japanese to surrender.

> but all of the actual documentary evidence from the time says otherwise.

What documentary evidence is that? Most of this shit wasn't written down. Sure, someone wrote down a narrative for the history books, after the fact. One that preserved the "we're the good guys" theme... can't exactly go murdering the unconscious bad guy that had already stopped fighting just to impress the other bad guys. Or rather, you can't admit that's what you were doing.


Why the bombings of Hiroshima and Nagasaki were gravely immoral[0].

[0] https://catholicherald.co.uk/ch/weigels-terrible-arguments/


I don't see how it was any more immoral than anything else in WW2 that caused mass death and mayhem. Certainly if you are simply talking about casualties.

What was more immoral about dropping the a-bomb than firebombing Tokyo?


Both were war crimes, and as such unacceptable. Or rather should have been.

I like when people say "but the enemy did this and that, so us doing something similar is totally fine", because it is just false. But going to "we already did it once, so no biggy if we do it again right?" is even better. It acknowledges, and defends, the evilness of killing civilians at large scale at the same time. Kind of like wanting to be a big, badass and still feeling the need to morally justify all the shit one does.


I used to believe the American feel-good propaganda that "we just had to nuke the Japanese, OK? We saved more lives.".

Then I gained perspective, and learned that Japan's navy had been entirely wiped out (EDIT: and the air force) the Japanese were trying to negotiate a surrender, but the US wouldn't budge on something as minor as allowing to keep Hirohito as figurehead emperor (which they eventually did after they surrendered after the nukes).

It was racism, plain and simple. Actually, it's more than racism, I'm not sure that word explains it. This isn't the relatively mild white-on-black racism of 1940s America. This is a much different level of racism, where Americans saw the Japanese as complete subhumans not even worth morally debating over. The Americans spent years building those bombs, so they must have thought it was anti-climactic not to try them. They didn't want to use them near the white people in Europe, so who best than a remote island of people you don't even view as humans, to the point where you put your own citizens in internment camps for sharing an ethnicity with them?

But I see so many Americans clinging to the myth that the nukes were a utilitarian moral choice. Admitting the truth to themselves would raise some questions about their country which clash with the perception they have.


I'm part Japanese and still think dropping the bombs was the moral choice.

Even after dropping two bombs, Japanese military leadership still didn't want to surrender, and attempted a coup because the Emperor surrendered.

Plus, the firebombings of Tokyo killed more civilians, so aren't those worse?

While there was plenty of racism to go around at the time, I don't see how racism played into it. Germany was firebombed just like Japan. It didn't get nuked because the war there ended before nukes were ready, that's it.


On the prospect of working on a "Uranium-Engine"

> Every layman can see that these ideas are exceedingly important. Hence there won't be any money in it. You only make money on ideas which have escaped the general public. If you invent something like artificial rubies for the watch-making industry, you'll make more money than with the Uranium-Engine

After hearing news of the bomb

> That shows at any rate that the Americans are capable of real cooperation on a tremendous scale. That would have been impossible in Germany. Each one said that the other was unimportant.


WWII? The atom bombs on Japan? I tried to understand the history, causes, read the Richard Rhodes books, other books, watched documentaries and movies, etc.

As I read this thread, I guess that it has more and better thinking about the issues of morality, ethics, various steps that could have been attempted with Japan, atomic weapons stopping wars, etc. than Truman considered when he decided to drop the bombs and conclude that Truman saw just two cases: (1) Drop atomic bombs, end the war within not many hours, and save lives of US soldiers. (2) Delay, attempt, look for alternatives and possibilities, negotiate, demonstrate, ..., and lose more US lives. So, he picked (1), and maybe he did it in less than 10 minutes.


Saving American lives was probably the dominant factor, but Americans expected that a land invasion would also kill millions of Japanese, far more than the atomic bombs.


There are strong indications that a surrender would occur regardless and why would the only alternative to a land invasion of Japan be dropping two nuclear bombs on Japanese cities.


They didn't surrender after the first, and the military leadership didn't want to surrender after the second (the emperor did anyway and there was an attempted coup).

Note that more people were killed by firebombing Tokyo than either nuke, Japan was completely at the mercy of US bombing raids before the atomic bombs and they still refused to surrender.


> HEISENBERG said he could understand it because GERLACH was the only one of them who had really wanted a German victory, because although he realized the crimes of the Nazis and disapproved of them, he could not get away from the fact that he was working for GERMANY. HAHN replied that he too loved his country and that, strange as it might appear, it was for this reason that he had hoped for her defeat.

This is the difference between Nationalism and Patriotism


Yes the most fascinating part of this for me was the different ways that they each tried to reconcile their love of their country, of science, of the desire to further technological progress for its own sake, and the desire to do what’s “right” (with differing viewpoints about what “right” in this context actually meant).


They all undoubtedly suspected they were being recorded at this point and the war was already lost. Would be curious what their opinions actually were during the peak war years.


HARTECK: [...] we would have needed to employ 50 workmen continuously in order to produce two tons a year. If we wanted to make ten tons we would have had to employ 250 men. We couldn't do that.

WEIZSÄCKER: How many people were working on V 1 and V 2?

DIEBNER: Thousands worked on that.

---- Diebner is omitting HOW they got that workforce up into the thousands. Many who worked on V-1 and V-2 rockets were prisoners who were literally worked to death.


Likely comparably humane to the US sourcing almost all of its WWII uranium from the Belgian Congo


I just finished reading McCarthy's 'Stella Marris' and 'The Passenger'. Anyone who enjoyed reading this linked transcript I imagine might also appreciate much of the themes treated in McCarthy's final works. I found the passages on Oppenheimer interesting especially in light of Nolan's new film. Funny timing.


Some years ago I saw a documentary on TV that claimed that the Japanese had their own bomb program, and in the final days of the war actually detonated a small device. With the defeat they disbanded and destroyed the evidence of it.

I've never seen any hint of this before or since. Has anyone else?


Wikipedia has a detailed description of the program https://en.m.wikipedia.org/wiki/Japanese_nuclear_weapons_pro...

Looks like they never got sufficient quantities of U-235 to attempt a detonation.



Amazing and well worth reading the whole thing.


I'm surprised to find little information online about Dr. Hans Bomke, whom I presume is the "BOMKE" referenced a few times. He was not well liked it seems.

I have seen references about a US FBI file on him (Bomke, Hans 424771), also that he did do some co-research with Otto Hahn.

Paul Lawrence Rose's book "Heisenberg and the Nazi Atomic Bomb Project" say that the others at Farm Hall considered him a Nazi plant.


Several points to consider:

1. While much has been made of the theoretical physical effort at Los Alamos, without the Oak Ridge, TN and Hanford, WA chemical-physical production lines for uranium-235 and plutonium, bomb production would not have been possible.

2. These efforts required vast inputs of energy, mostly provided by hydroelectric projects such as TVA for the Oak Ridge uranium effort. It's highly implausible that such efforts would have succeeded in wartime Germany no matter how many resources were diverted to them. One bombing run would have wiped out the whole enterprise - and of course, neither Oak Ridge nor Hanford were subjected to aerial bombardment.

3. The Germans apparently were more interested in a nuclear rocket engine or some such than a nuclear bomb, by most accounts I've read. Also, their heavy water project in Norway was effectively sabotaged.

Note also, many scientists involved with the bomb project quit as soon as they learned Germany was defeated and so the rationale of beating the Germans to the bomb no longer made any sense.

FDR, if he hadn't died early, would almost certainly have rejected the use of the bomb against Japan, for the same reasons that he rejected the use of poison gas against the Japanese holdouts on Iwo Jima and Okinawa. If the Japanese had simply been given the option to retain their figurehead Emperor, they'd have certainly surrendered rather than accept the occupation of northern Japan by Russian forces in a replay of East Germany.

Isn't history fun?


> "...If the Japanese had simply been given the option to retain their figurehead Emperor, they'd have certainly surrendered..."

There was a barely averted coup (https://en.wikipedia.org/wiki/Ky%C5%ABj%C5%8D_incident) to overturn Hirohito's decision surrender so that is clearly incorrect. The military, who was in control of the Japanese government, wanted to continue the war even after the use of both atomic weapons.


How does that contradict what you quoted? The claim is that if the Japanese had been able to conditionally surrender, with the condition of retaining their emperor, then they would have done so. You respond by pointing out that when the Japanese did eventually unconditionally surrendered, much of the government was still against that decision. That implies nothing about what their response would have been to a conditional surrender. It's just a non sequitur. If anything one would expect that there would have been less elements of the government resisting a conditional surrender and so the coup would have been more likely to be suppressed in that case.


> If the Japanese had simply been given the option to retain their figurehead Emperor, they'd have certainly surrendered rather than accept the occupation of northern Japan by Russian forces in a replay of East Germany.

Do you have a source for a historian arguing this point? If so, I'd be curious to read it. My own (albeit, purely hobbyist level) understanding on this is that this would almost certainly not have been the case.


>Note also, many scientists involved with the bomb project quit as soon as they learned Germany was defeated and so the rationale of beating the Germans to the bomb no longer made any sense.

Joseph Rotblat did. There weren't any others, let alone "many".

>FDR, if he hadn't died early, would almost certainly have rejected the use of the bomb against Japan, for the same reasons that he rejected the use of poison gas against the Japanese holdouts on Iwo Jima and Okinawa.

I think most historians would strongly disagree with this.


> One bombing run would have wiped out the whole enterprise

Which is exactly what happened to the small nuclear program Japan was attempting.


Very interesting post, thank you.


I wouldn't give any importance to those transcripts. They were all aware that the captors are bugging them and they were just playing the innocent scientists that worked for the sake of advancing science and they are not infact proud members of the Nazi Party.


HEISENBERG: "Microphones installed? (Laughing) Oh, no, they're not as cute as all that. I don't think they know the real Gestapo methods; they're a bit old fashioned in that respect." [1], p. 13.

[1] https://pubs.aip.org/DocumentLibrary/files/publishers/pto/co...


Fascinating how the people that they were discussing were having their ear to the wall. It makes you wonder to what extent they were doing this because they were aware of being eavesdropped on or if they were really so naive as to discuss how best to influence the people that they were utterly dependent on.

Edit: I've read some more of the transcript and what really is interesting is that they are so aloof from the realities of the situation they are in. Almost conceited.


Although, that is also exactly what you’d say if you were trying to manipulate the listeners.


It's a knowing jest, not a sincere statement - and a reminder to the others to keep the show going for their audience.


Someone posted a link to a more complete transcript in one of the sibling threads here. I think it is ambiguous whether or who thought they were being recorded. They do in a couple instances talk about some things (people they think or know have isotopes or something like that (I don’t know anything about the physics), and some patents) that they don’t want to reveal to their captors. So, I think I’m the very least they weren’t all on the page of “let’s do a big counterintelligence type ruse.”

Of course there are also layers of intrigue going on; they are all colleagues but they must know that they’ll ultimately be interviewed to determine who was really loyal to the Nazi party, so to some extent they are probably trying to convince each other. Meanwhile the guy writing the transcript seems generally to have opinions about their personalities, and a genuine concern for their well-being to some extent, so I’m sure that colors his analysis too.


I'm assuming we're all reading this as evidence for GPs point, not that they were unaware of the possible.


What's important about the recordings is that they were stunned at the news about Hiroshima, and declared it impossible. Heisenberg's own calculations had predicted a much larger critical mass. If they were acting, apparently they're amazing actors.


This reads in some ways like American urbanists discussing Chinese infrastructure and the building boom.


Off-topic: I didn't like the serif font so opened Dev Tools to modify the CSS for more comfortable reading. I'm amazed, the page is a giant TABLE, it uses BODY BGCOLOR, so a 90's style web design. There's CSS being used though.

I guess it's an institute dependant on grants, where they can't just blow money on a website redesign...




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