China's President Xi Jinping (L) and US President Donald Trump attend a welcome ceremony at the Great Hall of the People in Beijing on November 9, 2017.
Capt. Brett Crozier, then the commanding officer of the aircraft carrier USS Theodore Roosevelt, addresses the crew in the Eastern Pacific Ocean on Dec. 15, 2019.
Military soldiers follow social distancing guidelines as they meet while setting up a field hospital at CenturyLink Event Center on March 31, in Seattle, Washington.
Russia's Soyuz MS-10 spacecraft carrying the members of the International Space Station (ISS) expedition 57/58 blasts off in from the Baikonur Cosmodrome in Kazakhstan on October 11, 2018.
A fighter from the Security Belt Force, a separatist flag during clashes between southern separatists and Saudi-backed government forces at the Fayush-Alam crossroads near Aden in southern Yemen on Aug. 30, 2019.
Senate Majority Leader Mitch McConnell (from left), U.S. Treasury Secretary Steven Mnuchin, and Senate Minority Leader Chuck Schumer spread out to practice social distancing measures against the spread of the coronavirus at a meeting in the Hart Senate Office Building on Capitol Hill in Washington on March 20.