U.S. Army Gen. John F. Campbell, commander, International Security Assistance Force and U.S. Forces-Afghanistan, speaks with United Kingdom Prime Minister David Cameron during an initial meet and greet upon Prime Minister Cameron’s arrival in Kabul, Oct. 3. Prime Minister Cameron made an unannounced visit to Kabul to meet with Afghan President Ashraf Ghani and the new unity government four days after Afghan President Ghani was sworn into office. (photo by U.S. Army Staff Sgt. Richard D. Sherba, COMISAF photographer)