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Outgoing U.S. Secretary of State Rex Tillerson (Front) delivers farewell speech at the State Department in Washington D.C., the United States, on March 22, 2018. (Xinhua/Ting Shen)
Outgoing U.S. Secretary of State Rex Tillerson (Front) delivers farewell speech at the State Department in Washington D.C., the United States, on March 22, 2018. (Xinhua/Ting Shen)