MR. RAJIV CHANDRASEKARANThe -- you know, I think back seven summers ago, Diane, when I was in Baghdad listening to Ambassador Paul Bremer answer questions from Iraqis who asked him, how long are you going to say here? And he said, we don't intend to stay here a day longer than necessary. And -- where we had a point where, where was necessary? Is it at some point in the past? Is it today? Is it at some point in the future? And, you know, for Obama, this carries some real political risks. You know, on one hand, he's trying to say, look, this is good enough with still 49,500 troops in that country, all of whom are under some degree of danger, plus the American civilians, the diplomats and the others who are there. As noted, no political compromise, as yet, that is leading to the formation of a new Iraqi government. Still continued threats from al-Qaeda holdouts, continued meddling from neighboring Iran, a whole confluence of factors here. He's hoping, the president, that this continues on a trajectory. But there's no guarantee of that.