Ted Galen Carpenter, vice president for defense and foreign policy studies at the Cato Institute, thinks that we should get out of Iraq.

Except when the survival of the nation is at stake, all military missions must be judged according to a cost-benefit calculation. Iraq has never come close to being a war for America's survival. It was an elective war -- a war of choice, and a bad choice at that. How much are Americans willing to pay in blood, treasure and toil to try to prevail in Iraq?