US Secretary of Defense Jim Mattis (L) and US Secretary of State Rex Tillerson conduct a two question press conference after meeting with Chinese State Councilor Yang Jiechi, and Chief of the People‘s Liberation Army Joint Staff Department General Fang Fenghui as the two countries start the US-China Diplomatic and Security Dialogue June 21, 2017, at the US Department of State in Washington, DC. / AFP PHOTO / PAUL J. RICHARDS <저작권자(c) 연합뉴스, 무단 전재-재배포 금지>