I gotta hand it to Bush and his advisors

They benefit no matter what happens in Iraq. If a pro-US government is formed, the US can keep its bases in Iraq and can suck up its oil, etc. If the present squabbling continues, the US can stay too, since no founded Iraqi administration will be formed to speak with a sufficiently authoritative voice to oust our military. Only if a passionately anti-US government prevails, and it can speak with one anti-US voice, will the US be compelled to leave--and that's not going to happen so long as the anti-US violence continues, which, in turn, is assured by the continued US presence. Like I say: Brilliant.