U.S. yet to announce exact troop number deployment in Afghanistan

Visiting U.S. Defense Secretary James Mattis speaks during a press conference in Kabul, capital of Afghanistan, Sept. 27, 2017.The visiting U.S. Defense Secretary James Mattis said Wednesday that the exact number of additional U.S. troops to be deployed in Afghanistan was not still clear. (Xinhua/Rahmat Alizadah)