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China's President Xi Jinping during a meeting at the Great Hall of the People in Beijing on June 25, 2018.

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German Chancellor Angela Merkel speaks with US Vice President Joe Biden at the start of their meeting at the Chancellery on February 1, 2013 in in Berlin, Germany.

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A protester in front of the Russian embassy in Dublin, Jan. 31.

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Taliban co-founder Mullah Abdul Ghani Baradar leaves after signing an agreement with the United States during a ceremony in the Qatari capital Doha on February 29, 2020.

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Gen. Gustave F. Perna during am Operation Warp Speed press briefing in Washington, Nov. 19, 2020.