As I understand it, the current primary mission for US troops in Iraq is holding the country together -- i.e. creating an environment that is safe enough for the Iraqis to form a viable government and to train enough troops and police to sustain that government. We're doing our part, but the Iraqi leadership seems to be making little, if any, progress toward establishing a sustainable government. A firm timetable for the withdrawal of American troops just might spur the Iraqi leadership into action, but announcing a withdrawal timetable is militarily insane. If the enemy knows when you're leaving, all they have to do is wait for you to go. How do we get out of this Catch-22 situation?