Well, I might be wrong at this, I am not really good in politics, but when I hear in news that Libya is being bombed by US, UK, and FR and then I make a quick google search about Libya's major oil buyers and see that those are exactly the same countries that came to bomb them. Well the whole spirit of "bringing democracy to totalitarian states" disappears... From the first link you provided, I wonder why is it ExxonMobile to get the Iraqi oil contract before LukOil and others. Here in Turkmenistan, the major contracted oil/gas companies are Petronas(Malaysia), Petforac(Russia) and Dragon Oil(UAE). I wonder where is ExxonMobile and British Petrolium, ohh, maybe they are still busy at bringing democracy to other more oil and gas wealthy states such as Iran, Syria and Co.
The major oil buyers thing in Libya happened around 2005 or so when Qaddafi decided to reconcile with the west in exchange for profitable oil contracts and an implicit promise that we wouldn't bomb the crap out of him the first chance we got (joke's on him). So we were actually bombing a country where we'd already gotten the oil access, not the other way around.
As far as the oil trade in general, it's been dominated by cloak and dagger stuff for decades, in the US we have a partnership between the oil firms and the gov't where the gov't goes to bat for them in foreign countries, and in return they don't pay their taxes. In China, there's less of a formal division between the two so it's simpler. But both cases are the same.
And I'm not saying that's right, but it's a lot more complex than "the US controls Iraq's oil". We don't, really, we have to bribe people and do underhanded stuff on equal footing with everyone else at this point.
