Students walk toward a police vehicle after they were rescued from the site of an attack at the American University of Afghanistan in Kabul, Afghanistan August 25, 2016. REUTERS/Mohammad Ismail

Students walk toward a police vehicle after they were rescued from the site of an attack at the American University of Afghanistan in Kabul, Afghanistan August 25, 2016. REUTERS/Mohammad Ismail

Students walk toward a police vehicle after they were rescued from the site of an attack at the American University of Afghanistan in Kabul, Afghanistan August 25, 2016. REUTERS/Mohammad Ismail

August 25, 2016 3:49 AM (UTC+8)