"We've broken the Taliban's momentum in Afghanistan, and begun the transition to an Afghan lead," President Obama said during his weekly address on Sept. 1. "Next month," the president continued, "the last of the troops I ordered as part of the surge against the Taliban will come home, and by 2014, the transition to Afghan lead will be complete." This is not the first time the president has talked about Afghanistan in this manner. And Obama administration officials have repeatedly made the same argument: the Taliban's "momentum" was broken by a surge of forces into Afghanistan beginning in 2010. Consequently,...