WARSAW, POLAND - MARCH 26: The US President, Joe Biden delivers a speech at the Royal Castle on March 26, 2022 in Warsaw, Poland. Biden arrived in Poland yesterday, meeting with the Polish president as well as U.S. troops stationed near the Ukrainian border, bolstering NATO's eastern flank. (Photo by Omar Marques/Getty Images)
WARSAW, POLAND - MARCH 26: The US President, Joe Biden delivers a speech at the Royal Castle on March 26, 2022 in Warsaw, Poland. Biden arrived in Poland yesterday, meeting with the Polish president as well as U.S. troops stationed near the Ukrainian border, bolstering NATO's eastern flank. (Photo by Omar Marques/Getty Images)
WARSAW, POLAND - MARCH 26: People wait ahead of The US President, Joe Biden delivering a speech at the Royal Castle on March 26, 2022 in Warsaw, Poland. Biden arrived in Poland yesterday, meeting with the Polish president as well as U.S. troops stationed near the Ukrainian border, bolstering NATO's eastern flank. (Photo by Omar Marques/Getty Images)
WARSAW, POLAND - MARCH 26: Polish military forces stand next to the US and Polish National flags as Poland's President, Andrzej Duda welcomes US. President Joe Biden at the presidential Palace on March 26, 2022 in Warsaw, Poland. Biden arrived in Poland yesterday, meeting with the Polish president as well as U.S. troops stationed near the Ukrainian border, bolstering NATO's eastern flank. (Photo by Omar Marques/Getty Images)
WARSAW, POLAND - MARCH 26: US. President Joe Biden inspects the Polish guard at the presidential Palace on March 26, 2022 in Warsaw, Poland. Biden arrived in Poland yesterday, meeting with the Polish president as well as U.S. troops stationed near the Ukrainian border, bolstering NATO's eastern flank. (Photo by Omar Marques/Getty Images)
