United States Secretary of Defense Chuck Hagel (right) shaking hands with Afghan Gen. Sher Mohammad Karimi during a meeting at the International Security Assistance Force Headquarters on Saturday (Sunday in Manila) in Kabul, Afghanistan. AFP PHOTO
KABULL: Defense Secretary Chuck Hagel will visit United States (US) troops in Afghanistan on Sunday after appealing to Kabul to sign a long-delayed security accord allowing North Atlantic Treaty Organization (NATO) forces to stay in the country after 2014.