The trap Obama must not be caught in is one of excessive pessimism. Conditions now favor expeditious withdrawal more than they did only a few months ago. But the manner of withdrawal, its pace, and its concomitant diplomacy now require a different cast, and may require an even different one next February and March. None of this means that this war was not a mistake; it does suggest it need not in the medium term be a catastrophe. Petraeus deserves the lion's share of the credit; luck and time and the self-defeating nihilism of the Jihadists have helped. But Bush and McCain equally merit points for pursuing the surge, even though the metrics pointed to failure. Obama needs to capitalize on these gains, not dismiss them.