Afghans burn the U.S. flag in Herat, Afghanistan, on Sunday, Sept. 16, 2012, during a protest against an Internet video mocking the Prophet Muhammad that many fear could further aggravate Afghan-U.S. relations. (AP Photo/Hoshang Hashimi)

Photo by: Hoshang Hashimi

Afghans burn the U.S. flag in Herat, Afghanistan, on Sunday, Sept. 16, 2012, during a protest against an Internet video mocking the Prophet Muhammad that many fear could further aggravate Afghan-U.S. relations. (AP Photo/Hoshang Hashimi)