FILE - In this Sunday, Jan. 31, 2010 file photo, a U.S. Predator drone flies over the moon above Kandahar Air Field, southern Afghanistan. The number of U.S. drone strikes in Afghanista

 

              FILE - In this Sunday, Jan. 31, 2010 file photo, a U.S. Predator drone flies over the moon above Kandahar Air Field, southern Afghanistan. The number of U.S. drone strikes in Afghanista
FILE - In this Sunday, Jan. 31, 2010 file photo, a U.S. Predator drone flies over the moon above Kandahar Air Field, southern Afghanistan. The number of U.S. drone strikes in Afghanistan jumped 72 percent in 2012, killing at least 16 civilians in a sharp increase from the previous year, the U.N. said Tuesday, Feb. 19, 2013 in a sign of the changing mission as international forces prepare to withdraw combat forces in less than two years. (AP Photo/Kirsty Wigglesworth, File)