FILE - In this Jan. 25, 2018, file photo, U.S. Secretary of Defense Jim Mattis, left, listens during talks with Vietnam's Communist Party General Secretary Nguyen Phu Trong in Hanoi, Vietnam. Mattis is planning to make his second visit to Vietnam this year, signaling how vigorously the Trump administration is trying to counter China's military assertiveness in the South China Sea by building up relations with smaller nations in the region. (AP Photo/Tran Van Minh, File)
Featured Photo Galleries
