A bead of sweat rolls down a Marine's face as he holds a Ukrainian flag before U.S. President Joe Biden's meeting with Ukrainian President Volodymyr Zelenskyy at the White House, Thursday, September 21, 2023, in Washington, D.C. A bead of sweat rolls down a Marine's face as he holds a Ukrainian flag before U.S. President Joe Biden's meeting with Ukrainian President Volodymyr Zelenskyy at the White House, Thursday, September 21, 2023, in Washington, D.C.