Christopher Stokes, second left, the general director of Doctors Without Borders and his colleague stand as an Afghan National Army vehicle guards at the gate of its hospital after U.S. troops left the area in Kunduz, Afghanistan, Thursday, Oct. 15, 2015. Taliban fighters took control of the key northern city late last month, leading to a protracted battle with Afghan forces supported by U.S. airstrikes. During the fighting, a U.S. air attack hit the hospital, killing at least 12 Doctors Without Borders staff and 10 patients. (AP Photo/Najim Rahim), APTOPIX