"Once you've got Baghdad, it's not clear what you do with it," he told the New York Times. "It's not clear what kind of government you would put in place of the one that's currently there now. Is it going to be a Shia regime, a Sunni regime or a Kurdish regime? Or one that tilts toward the Baathists, or one that tilts toward the Islamic fundamentalists? How much credibility is that government going to have if it's set up by the United States military when it's there? How long does the United States military have to stay to protect the people that sign on for that government, and what happens to it once we leave?"