withdrawal?:
And here is James Baker, establishment eminence, co-chair of the Iraq Study Group, on CNN with Anderson Cooper:

Cooper: And is it possible that getting the U.S. troops out will actually lessen that violence, that it will at least take away the motivation of nationalist insurgents?
Baker: Many people have argued that to us. Many people in Iraq made that case.
Cooper: Do you buy it?
Baker: Yes, I think there is some validity to it, absolutely. Then we are no longer seen to be the occupiers.[2]

(...) In spite of all of the above we are told that the presence of the United States military has been and will continue to be a buffer against violence. Iraqis themselves do not believe this. A poll published in September found that Iraqis believe, by a margin of 78 to 21 percent, that the US military presence is "provoking more conflict that it is preventing".[3]