In this Sunday, Nov. 17, 2019 photo, protesters wear camouflage sniper uniforms and hold toy guns as they pass by graffiti at the Saadoun Tunnel, in Baghdad, Iraq. The tunnel that passes under Baghdad’s landmark Tahrir Square has become an ad hoc museum for Iraq's revolution: Young artists d…

Former White House national security aide Fiona Hill, left, and David Holmes, a U.S. diplomat in Ukraine, are sworn in to testify before the House Intelligence Committee on Capitol Hill in Washington, Thursday, Nov. 21, 2019, during a public impeachment hearing of President Donald Trump's ef…