Withdraw from Iraq

During the Democratic Debate Wednesday night, most of the candidates would not commit to having all troops out of Iraq by 2013. This seems kind of odd, seeing as how most of the candidates are strongly opposed to the war and wanted to immediately withdraw troops from Iraq and end the war. This reluctance makes you wonder if the Democratic candidates are genuinely opposed to the war, or just using the war's unpopularity as a tool to gain votes.