Hmm. So, what pray tell, is our goal in Iraq then? And, by the way, "kill all the terrorists" isn't a satisfactory answer. The reason why is that our presence in Iraq, far from hurting the recruitment prospects of international terrorist organizations has been practically a gift for them. The National Intelligence Estimate, which came out a couple of months back, talked about this. Every day our presence in Iraq makes America less safe. All of the innocent (and, in war unavoidable) casualties help to breed "anti-Americanism" and hatred. Terrorists are added to "their" ranks more and more as American presence continues.
Is the goal to establish a stable Iraqi government? Well, that's a noble goal, but I don't see how it could be accomplished. Religious and ethnic conflict seem to preclude the establishment of a competent governing body, and the incompetence of the Maliki regime is obvious and perhaps only rivaled by that of Bush (joke, by the way, before you impale me on an American flag).
The Iraq War itself was won 4 years ago when America toppled Saddam Hussein's government. What America and its army are doing right now is well-intentioned, but I don't see, realistically, how it can work out.