The military schedule synchronizes with the political one. By this time next year, if Iraq has not turned the corner, a good guess is that the Republican presidential nominee will be facing a choice: Promise to wind down the war, or lose the election. Whichever choice the nominee makes, the die will be cast.

Democrats have every reason to be angry at Bush's evasion of political accountability for the mess he has made in Iraq. Democrats, Republicans, and all other Americans have every reason to be angry at Bush for making the mess to begin with.

But anger does not justify impatience. If Petraeus says he needs more time, he should get it. If he fails, a course correction won't be long in coming. The 22nd Amendment has seen to that.