"At this point, it seems almost beside the point to say this: The New Republic deeply regrets its early support for this war. The past three years have complicated our idealism and reminded us of the limits of American power and our own wisdom. But, as we pore over the lessons of this misadventure, we do not conclude that our past misjudgments warrant a rush into the cold arms of "realism." Realism, yes; but not "realism." American power may not be capable of transforming ancient cultures or deep hatreds, but that fact does not absolve us of the duty to conduct a foreign policy that takes its moral obligations seriously. As we attempt to undo the damage from a war that we never should have started, our moral obligations will not vanish, and neither will our strategic needs," - the editors of the New Republic.
(For contrast, you can read the cri de couer by Lawrence Kaplan. I'm not sure what he's trying to say, except that he's been to Iraq and some of us haven't. Or does he think we're winning?)