Mattis, Dunford attend hearing on Afghan situation in Washington

U.S. Defense Secretary Jim Mattis (L, Front) and Chairman of the Joint Chiefs of Staff Joseph Dunford (R, Front) attend a hearing before Senate Armed Services Committee on Capitol Hill in Washington D.C., the United States, on Oct. 3, 2017. The committee held the hearing on political and security situation in Afghanistan. (Xinhua/Yin Bogu)