This month, the military leader of the surge, General David Petraeus, and America’s chief diplomat in Iraq, Ambassador Ryan Crocker, will present their second report to Congress on the surge and its effects. Prudent and circumspect men, they will surely not advance bold claims on behalf of the policy the United States has been following under their leadership. But I expect they will speak more optimistically about the future than many thought possible eighteen months ago. Their testimony will demonstrate that, at last, the United States has a sustainable strategy for Iraq with a reasonable chance of success, and one that George W. Bush will be able to turn over with confidence to the next incumbent of the White House.

How we got here is a story in itself.