FILE - This July 22, 2012 file photo shows U.S. Gen. John Allen, top commander of the NATO-led International Security Assistance Forces (ISAF) and US forces in Afghanistan gestures dur

 

              FILE - This July 22, 2012 file photo shows U.S.  Gen. John Allen, top commander of the NATO-led International Security Assistance Forces (ISAF) and US forces in Afghanistan gestures dur
FILE - This July 22, 2012 file photo shows U.S. Gen. John Allen, top commander of the NATO-led International Security Assistance Forces (ISAF) and US forces in Afghanistan gestures during an interview with the Associated Press in Kabul, Afghanistan. A diminished but resilient al-Qaida, whose 9/11 attacks drew America into its longest war, is attempting a comeback in the country's mountainous east even as U.S. and allied forces wind down their combat mission and concede a small but steady toehold to the terrorist group. (AP Photo/Musadeq Sadeq, File)