As soon as the US pulls out, wait about 5 seconds for a civil war to start. With their common enemy out of the way, the Sunni & Shia rivalry will erupt big time & it'll be a bloodbath until the Sunni minority is gone [read: dead], unless they have some sympathetic neighbours (Iran?) who jump into the fray.
Until then, anywhere from 5 to 30 Americans will perish DAILY (4 yesterday, 12 today, tomorrow...?) Personally, I think the US will leave at the end of June with their tails between their legs. Unless Bush can suddenly trot out OBL
in handcuffs, who is varyingly rumoured to have been captured sometime in the last 6 months, he's got egg all over his face & will be a one-term president, (one can only hope).
He told the UN to go f*ck themselves a year ago & decided to go it alone - so it'll be time to reap what he's sown. The Iraq war was never about terrorism, it has probably inspired MORE terrorism & anti-US sentiment than existed previously, and has undoubtedly made the world a more dangerous & unstable place.