U.S. Defense Secretary Ash Carter(L) testifies to Senate Armed Services Committee during the hearing on national security and military operations on Capitol Hill in Washington D.C., capital of the United States, Sept. 22, 2016. Influential U.S. Republican Senator John McCain on Thursday lashed out at President Barack Obama for his Middle East policy, describing it as "unmitigated disaster" that created a vacuum filled by terror groups. McCain, chairman of the Senate Armed Services Committee, made the accusations in his opening remarks to the committee's hearing on national security and military operations, at which Defense Secretary Ash Carter and Chairman of Joint Chiefs of Staff Joseph Dunford testified. (Xinhua/Bao Dandan)
