The WMDs that Cheney, Condoleeza Rice, Donald Rumsfield, and Colin Powell were referring to were nuclear weapons [1] though, not chemical weapons. We already knew he had chemical weapons:
>President Bush, Vice President Cheney, Condoleezza Rice, Donald Rumsfeld,
Colin Powell and George Tenet, to name a few leading figures, built support for the
war by telling the world that Saddam Hussein was stockpiling chemical weapons,
feverishly developing germ warfare devices and racing to build a nuclear bomb.
Some of them, notably Mr. Cheney, the administration's doomsayer in chief, said
Iraq had conspired with Al Qaeda that Saddam Hussein was connected to 9/11.
That's the first time I hear about nuclear weapons in this context - I was always under impression that this was about chemical weapons, which they found a lot of evidence of after the invasion.
Read the article I linked above. It's from that time period and Cheney and others specifically tried to link Iraq to nuclear weapons and Al Qaeda. It was fear-mongering and lying to justify the war and the Bush administration knew it: http://www.newsweek.com/2015/05/29/dick-cheneys-biggest-lie-...
I specifically recall LOTS of talk about "mushroom clouds" from the Bush administration leading up to the war. We knew they had chemical weapons because we sold them to them.
Wow! This is interesting. I thought the "WMDs in Iraq" was fake news, turns out the "no WMDs in Iraq" is fake news! So much fake news, hard to sort everything out.
https://en.wikipedia.org/wiki/Iraq_and_weapons_of_mass_destr...