Chris Floyd argues that Iraq is being deliberately turned into a failed state. I think this is a bit behind the curve, Iraq has been allowed to sink into long term conflict status for a very long time. The reality is that simply not making extreme effort to stabilize it is enough to turn it into a failed state. But he is right that there was a depraved indifference in our policy to the results of our actions.
It could also be that, given the US is losing in Iraq and that hegemony over the Middle East has been a stated US foreign policy goal for decades, that the neocons want chaos and the country splitting so they can grab and control the oil-rich southern part of Iraq. In other words, they want Iraq to fail, to split into pieces. Then they can grab some of those pieces.
Or try to grab them, that is. The populace, the insurgents, will still oppose them. This is something US warlords never grasped during Vietnam and isn’t grasping now. That’s why they’re losing.