Vietnamese military hats are seen as US Secretary of Defense James Mattis, General Ngo Xuan Lich, Minister of National Defense of the Socialist Republic of Vietnam, and their respective staffs of senior military leaders meet in the next room at the Pentagon August 8, 2017, 2017, in Washington, DC. / AFP PHOTO / PAUL J. RICHARDS

June 14, 2018 4:59 PM (UTC+8)