Andrew Exum is is the author of the memoir This Man’s Army and a fellow at the Center for a New American Security. He served in Afghanistan with the U.S. Army in 2002 and 2004.

Whether Greg Mortenson’s Three Cups of Tea turns out to be fact or fiction, we shouldn’t discard his approach toward engaging with the population in places like Afghanistan and Pakistan. Nor should we exaggerate his importance on U.S. policy, says Andrew Exum.

Limiting civilian deaths in Afghanistan is a worthy goal. But is it leaving the U.S. vulnerable? Andrew Exum, who advised Gen. McChrystal, on why the short-term risks are worth the long-term gains.

The landscape has changed dramatically since Gen. McChrystal called for a major surge in March. Andrew Exum, who helped draft that report, on the strategic upsides of Obama taking his time.