** FILE ** In this Saturday, Jan. 7, 2012, file photo, Sahar Gul, 15-year-old speaks during an interview with the Associated Press, as she is seen on a bed at a hospital in Kabul, Afghanistan. (AP Photo/Musadeq Sadeq, File)
** FILE ** Afghans push a damaged car from the scene of a militant attack by a suicide car bomber and Taliban militants disguised in burqas in Kabul, Afghanistan, on Wednesday, May 2, 2012. (AP Photo/Ahmad Jamshid)
An Afghan police special force member mans the scene of a Taliban attack on a compound housing hundreds of foreigners in Kabul, Afghanistan, on Wednesday, May 2, 2012. (AP Photo/Musadeq Sadeq)
At the Presidential Palace in Kabul, Afghanistan, on Wednesday, May 2, 2012, President Obama and Afghan President Hamid Karzai prepare to sign a 10-page strategic partnership agreement that will govern the U.S. support role in the Southwest Asian nation after 2014. (Associated Press)
President Barack Obama is greeted by Lt. Gen. Curtis "Mike" Scaparrotti, and U.S. Ambassador to Afghanistan Ryan Crocker as he steps off Air Force One at Bagram Air Field in Afghanistan, Tuesday, May 1, 2012. (AP Photo/Charles Dharapak)
**FILE** Greg Mortenson, founder of the Central Asia Institute, a Montana-based organization which builds schools for girls in remote tribal areas of Pakistan and Afghanistan (Associated Press/New Mark Communications via the St. Paul Paul Pioneer Press)
**FILE** A member of U.S. special operations forces and an Afghan National Army soldier search Oct. 31, 2009, for roadside bombs during a joint patrol in Shewan, a former Taliban stronghold in Afghanistan's Farah province. (Associated Press)