• ISIL fighters in Afghanistan
  • Afghan National Army (ANA) arrive at the site of a suicide car bomb attack in Kabul, Afghanistan April 19, 2016.
  • Afghan security forces. (File)
  • US Marines and Gunnary Sergeant Nate Cosby (R), Staff Sergeant Josh Lacey (2nd R) and Navy Hospitalman 2 Daniel Holmberg (L) from Border Adviser Team (BAT) and Explosive Ordance Disposal (EOD) 1st and 2nd Marine Division (Forward) walk through opium poppy field at Maranjan village in Helmand province on April 25, 2011 as they take patrol with their team and Afghanistan National Police
  • Afghan National Army (ANA)
  • An interior view of the MSF Trauma Centre, 14 October 2015, shows a missile hole in the wall and the burnt-out remians of the the building aftera sustained attack on the facility in Kunduz, northern Afghanistan
  • An Afghan National Army (ANA) soldier takes up position at the site of a suicide car bomb attack in Kabul, Afghanistan. (File)
  • Afghanistan National Army (ANA) soldiers
  • Family members weep at the funeral for one of the victims of last night suicide car bomb attack in Kabul, Afghanistan January 21, 2016
  • Afghanistan  Power Lines
  • Afghanistan National Army (ANA) soldiers
  • In this Monday, Dec. 28, 2015, file photo, an Afghan shopkeeper watches from the broken window of his shop near the site of suicide car bomb attack in Kabul, Afghanistan.
  • UK, US deploy troops in Afghanistan
  • A U.S. soldier from the 3rd Cavalry Regiment shields himself from the rotor wash of a UH-60 Blackhawk helicopter after being dropped off for a mission with the Afghan police near Jalalabad
  • A member of the Taliban insurgent
  • An Afghan policeman carries an injured man after an attack in Kabul, Afghanistan in this May 17, 2015 file photo
  • Afghan security forces inspect the site of a suicide attack after clashes with Taliban fighters in front of the Parliament, in Kabul, Afghanistan, Monday, June 22, 2015
  • Afghan security forces pray during a ceremony in Laghman province, east of Kabul, Afghanistan, Sunday, Jan. 11, 2015
  • Afghan guards of honor stand next to the 21 coffins of Afghan national army soldiers during a ceremony at a military hospital in Kabul on February 24, 2014
  • General John Francis Campbell, current commander of the International Security Assistance Force and United States Forces in Afghanistan