Biden to meet eastern flank NATO leaders amid Russia worries


              President Joe Biden walks across the South Lawn of the White House in Washington, Wednesday, Feb 22, 2023, after returning from his trip to Ukraine and Poland. (AP Photo/Susan Walsh)
            
              President Joe Biden walks across the South Lawn of the White House in Washington, Wednesday, Feb 22, 2023, after returning from his trip to Ukraine and Poland. (AP Photo/Susan Walsh)
            
              President Joe Biden boards Air Force One at Warsaw Chopin International Airport, Wednesday, Feb. 22, 2023, in Warsaw. (AP Photo/ Evan Vucci)
            
              President Joe Biden boards Air Force One at Warsaw Chopin International Airport, Wednesday, Feb. 22, 2023, in Warsaw. (AP Photo/ Evan Vucci)
            
              President Joe Biden, right, is greeted by Polish President Andrzej Duda, Wednesday, Feb. 22, 2023, at the Presidential Palace in Warsaw. (AP Photo/ Evan Vucci)
            
              President Joe Biden, right, is greeted by Polish President Andrzej Duda, Wednesday, Feb. 22, 2023, at the Presidential Palace in Warsaw. (AP Photo/ Evan Vucci)
            
              President Joe Biden participates in a meeting with the leaders of the Bucharest Nine, a group of nine countries that make up the eastern flank of NATO, Wednesday, Feb. 22, 2023, in Warsaw. (AP Photo/ Evan Vucci)
            
              President Joe Biden participates in a meeting with the leaders of the Bucharest Nine, a group of nine countries that make up the eastern flank of NATO, Wednesday, Feb. 22, 2023, in Warsaw. (AP Photo/ Evan Vucci)
            
              Russian President Vladimir Putin greets Chinese Communist Party's foreign policy chief Wang Yi during their meeting at the Kremlin in Moscow, Russia, Wednesday, Feb. 22, 2023. (Anton Novoderezhkin, Sputnik, Kremlin Pool Photo via AP)
            
              Russian President Vladimir Putin greets Chinese Communist Party's foreign policy chief Wang Yi during their meeting at the Kremlin in Moscow, Russia, Wednesday, Feb. 22, 2023. (Anton Novoderezhkin, Sputnik, Kremlin Pool Photo via AP)
            
              President Joe Biden speaks during a meeting with the leaders of the Bucharest Nine, a group of nine countries that make up the eastern flank of NATO, Wednesday, Feb. 22, 2023, in Warsaw. (AP Photo/ Evan Vucci)
            
              President Joe Biden speaks during a meeting with the leaders of the Bucharest Nine, a group of nine countries that make up the eastern flank of NATO, Wednesday, Feb. 22, 2023, in Warsaw. (AP Photo/ Evan Vucci)
            
              President Joe Biden walks across the South Lawn of the White House in Washington, Wednesday, Feb 22, 2023, after returning from his trip to Ukraine and Poland. (AP Photo/Susan Walsh)
            
              President Joe Biden boards Air Force One at Warsaw Chopin International Airport, Wednesday, Feb. 22, 2023, in Warsaw. (AP Photo/ Evan Vucci)
            
              President Joe Biden, right, is greeted by Polish President Andrzej Duda, Wednesday, Feb. 22, 2023, at the Presidential Palace in Warsaw. (AP Photo/ Evan Vucci)
            
              President Joe Biden participates in a meeting with the leaders of the Bucharest Nine, a group of nine countries that make up the eastern flank of NATO, Wednesday, Feb. 22, 2023, in Warsaw. (AP Photo/ Evan Vucci)
            
              Russian President Vladimir Putin greets Chinese Communist Party's foreign policy chief Wang Yi during their meeting at the Kremlin in Moscow, Russia, Wednesday, Feb. 22, 2023. (Anton Novoderezhkin, Sputnik, Kremlin Pool Photo via AP)
            
              President Joe Biden speaks during a meeting with the leaders of the Bucharest Nine, a group of nine countries that make up the eastern flank of NATO, Wednesday, Feb. 22, 2023, in Warsaw. (AP Photo/ Evan Vucci)
            
              President Joe Biden walks across the South Lawn of the White House in Washington, Wednesday, Feb 22, 2023, after returning from his trip to Ukraine and Poland. (AP Photo/Susan Walsh)
            
              President Joe Biden boards Air Force One at Warsaw Chopin International Airport, Wednesday, Feb. 22, 2023, in Warsaw. (AP Photo/ Evan Vucci)
            
              President Joe Biden, right, is greeted by Polish President Andrzej Duda, Wednesday, Feb. 22, 2023, at the Presidential Palace in Warsaw. (AP Photo/ Evan Vucci)
            
              President Joe Biden participates in a meeting with the leaders of the Bucharest Nine, a group of nine countries that make up the eastern flank of NATO, Wednesday, Feb. 22, 2023, in Warsaw. (AP Photo/ Evan Vucci)
            
              Russian President Vladimir Putin greets Chinese Communist Party's foreign policy chief Wang Yi during their meeting at the Kremlin in Moscow, Russia, Wednesday, Feb. 22, 2023. (Anton Novoderezhkin, Sputnik, Kremlin Pool Photo via AP)
            
              President Joe Biden speaks during a meeting with the leaders of the Bucharest Nine, a group of nine countries that make up the eastern flank of NATO, Wednesday, Feb. 22, 2023, in Warsaw. (AP Photo/ Evan Vucci)
            
              President Joe Biden walks across the South Lawn of the White House in Washington, Wednesday, Feb 22, 2023, after returning from his trip to Ukraine and Poland. (AP Photo/Susan Walsh)
            
              President Joe Biden boards Air Force One at Warsaw Chopin International Airport, Wednesday, Feb. 22, 2023, in Warsaw. (AP Photo/ Evan Vucci)
            
              President Joe Biden, right, is greeted by Polish President Andrzej Duda, Wednesday, Feb. 22, 2023, at the Presidential Palace in Warsaw. (AP Photo/ Evan Vucci)
            
              President Joe Biden participates in a meeting with the leaders of the Bucharest Nine, a group of nine countries that make up the eastern flank of NATO, Wednesday, Feb. 22, 2023, in Warsaw. (AP Photo/ Evan Vucci)
            
              Russian President Vladimir Putin greets Chinese Communist Party's foreign policy chief Wang Yi during their meeting at the Kremlin in Moscow, Russia, Wednesday, Feb. 22, 2023. (Anton Novoderezhkin, Sputnik, Kremlin Pool Photo via AP)
            
              President Joe Biden speaks during a meeting with the leaders of the Bucharest Nine, a group of nine countries that make up the eastern flank of NATO, Wednesday, Feb. 22, 2023, in Warsaw. (AP Photo/ Evan Vucci)
            
              President Joe Biden walks across the South Lawn of the White House in Washington, Wednesday, Feb 22, 2023, after returning from his trip to Ukraine and Poland. (AP Photo/Susan Walsh)
            
              President Joe Biden, right, is greeted by Polish President Andrzej Duda, Wednesday, Feb. 22, 2023, at the Presidential Palace in Warsaw. (AP Photo/ Evan Vucci)
            
              President Joe Biden participates in a meeting with the leaders of the Bucharest Nine, a group of nine countries that make up the eastern flank of NATO, Wednesday, Feb. 22, 2023, in Warsaw. (AP Photo/ Evan Vucci)
            
              Russian President Vladimir Putin greets Chinese Communist Party's foreign policy chief Wang Yi during their meeting at the Kremlin in Moscow, Russia, Wednesday, Feb. 22, 2023. (Anton Novoderezhkin, Sputnik, Kremlin Pool Photo via AP)
            
              President Joe Biden speaks during a meeting with the leaders of the Bucharest Nine, a group of nine countries that make up the eastern flank of NATO, Wednesday, Feb. 22, 2023, in Warsaw. (AP Photo/ Evan Vucci)
            
              President Joe Biden walks across the South Lawn of the White House in Washington, Wednesday, Feb 22, 2023, after returning from his trip to Ukraine and Poland. (AP Photo/Susan Walsh)
            
              President Joe Biden boards Air Force One at Warsaw Chopin International Airport, Wednesday, Feb. 22, 2023, in Warsaw. (AP Photo/ Evan Vucci)
            
              President Joe Biden, right, is greeted by Polish President Andrzej Duda, Wednesday, Feb. 22, 2023, at the Presidential Palace in Warsaw. (AP Photo/ Evan Vucci)
            
              President Joe Biden participates in a meeting with the leaders of the Bucharest Nine, a group of nine countries that make up the eastern flank of NATO, Wednesday, Feb. 22, 2023, in Warsaw. (AP Photo/ Evan Vucci)
            
              Russian President Vladimir Putin greets Chinese Communist Party's foreign policy chief Wang Yi during their meeting at the Kremlin in Moscow, Russia, Wednesday, Feb. 22, 2023. (Anton Novoderezhkin, Sputnik, Kremlin Pool Photo via AP)
            
              President Joe Biden speaks during a meeting with the leaders of the Bucharest Nine, a group of nine countries that make up the eastern flank of NATO, Wednesday, Feb. 22, 2023, in Warsaw. (AP Photo/ Evan Vucci)
            
              President Joe Biden walks across the South Lawn of the White House in Washington, Wednesday, Feb 22, 2023, after returning from his trip to Ukraine and Poland. (AP Photo/Susan Walsh)
            
              President Joe Biden boards Air Force One at Warsaw Chopin International Airport, Wednesday, Feb. 22, 2023, in Warsaw. (AP Photo/ Evan Vucci)
            
              President Joe Biden, right, is greeted by Polish President Andrzej Duda, Wednesday, Feb. 22, 2023, at the Presidential Palace in Warsaw. (AP Photo/ Evan Vucci)
            
              President Joe Biden participates in a meeting with the leaders of the Bucharest Nine, a group of nine countries that make up the eastern flank of NATO, Wednesday, Feb. 22, 2023, in Warsaw. (AP Photo/ Evan Vucci)
            
              Russian President Vladimir Putin greets Chinese Communist Party's foreign policy chief Wang Yi during their meeting at the Kremlin in Moscow, Russia, Wednesday, Feb. 22, 2023. (Anton Novoderezhkin, Sputnik, Kremlin Pool Photo via AP)
            
              President Joe Biden speaks during a meeting with the leaders of the Bucharest Nine, a group of nine countries that make up the eastern flank of NATO, Wednesday, Feb. 22, 2023, in Warsaw. (AP Photo/ Evan Vucci)
            
              President Joe Biden walks across the South Lawn of the White House in Washington, Wednesday, Feb 22, 2023, after returning from his trip to Ukraine and Poland. (AP Photo/Susan Walsh)
            
              President Joe Biden boards Air Force One at Warsaw Chopin International Airport, Wednesday, Feb. 22, 2023, in Warsaw. (AP Photo/ Evan Vucci)
            
              President Joe Biden, right, is greeted by Polish President Andrzej Duda, Wednesday, Feb. 22, 2023, at the Presidential Palace in Warsaw. (AP Photo/ Evan Vucci)
            
              President Joe Biden participates in a meeting with the leaders of the Bucharest Nine, a group of nine countries that make up the eastern flank of NATO, Wednesday, Feb. 22, 2023, in Warsaw. (AP Photo/ Evan Vucci)
            
              Russian President Vladimir Putin greets Chinese Communist Party's foreign policy chief Wang Yi during their meeting at the Kremlin in Moscow, Russia, Wednesday, Feb. 22, 2023. (Anton Novoderezhkin, Sputnik, Kremlin Pool Photo via AP)
            
              President Joe Biden speaks during a meeting with the leaders of the Bucharest Nine, a group of nine countries that make up the eastern flank of NATO, Wednesday, Feb. 22, 2023, in Warsaw. (AP Photo/ Evan Vucci)
            
              President Joe Biden walks across the South Lawn of the White House in Washington, Wednesday, Feb 22, 2023, after returning from his trip to Ukraine and Poland. (AP Photo/Susan Walsh)
            
              President Joe Biden boards Air Force One at Warsaw Chopin International Airport, Wednesday, Feb. 22, 2023, in Warsaw. (AP Photo/ Evan Vucci)
            
              President Joe Biden, right, is greeted by Polish President Andrzej Duda, Wednesday, Feb. 22, 2023, at the Presidential Palace in Warsaw. (AP Photo/ Evan Vucci)
            
              President Joe Biden participates in a meeting with the leaders of the Bucharest Nine, a group of nine countries that make up the eastern flank of NATO, Wednesday, Feb. 22, 2023, in Warsaw. (AP Photo/ Evan Vucci)
            
              Russian President Vladimir Putin greets Chinese Communist Party's foreign policy chief Wang Yi during their meeting at the Kremlin in Moscow, Russia, Wednesday, Feb. 22, 2023. (Anton Novoderezhkin, Sputnik, Kremlin Pool Photo via AP)
            
              President Joe Biden speaks during a meeting with the leaders of the Bucharest Nine, a group of nine countries that make up the eastern flank of NATO, Wednesday, Feb. 22, 2023, in Warsaw. (AP Photo/ Evan Vucci)
            
              President Joe Biden walks across the South Lawn of the White House in Washington, Wednesday, Feb 22, 2023, after returning from his trip to Ukraine and Poland. (AP Photo/Susan Walsh)
            
              President Joe Biden boards Air Force One at Warsaw Chopin International Airport, Wednesday, Feb. 22, 2023, in Warsaw. (AP Photo/ Evan Vucci)
            
              President Joe Biden, right, is greeted by Polish President Andrzej Duda, Wednesday, Feb. 22, 2023, at the Presidential Palace in Warsaw. (AP Photo/ Evan Vucci)
            
              President Joe Biden participates in a meeting with the leaders of the Bucharest Nine, a group of nine countries that make up the eastern flank of NATO, Wednesday, Feb. 22, 2023, in Warsaw. (AP Photo/ Evan Vucci)
            
              Russian President Vladimir Putin greets Chinese Communist Party's foreign policy chief Wang Yi during their meeting at the Kremlin in Moscow, Russia, Wednesday, Feb. 22, 2023. (Anton Novoderezhkin, Sputnik, Kremlin Pool Photo via AP)
            
              President Joe Biden speaks during a meeting with the leaders of the Bucharest Nine, a group of nine countries that make up the eastern flank of NATO, Wednesday, Feb. 22, 2023, in Warsaw. (AP Photo/ Evan Vucci)
            
              President Joe Biden walks across the South Lawn of the White House in Washington, Wednesday, Feb 22, 2023, after returning from his trip to Ukraine and Poland. (AP Photo/Susan Walsh)
            
              President Joe Biden boards Air Force One at Warsaw Chopin International Airport, Wednesday, Feb. 22, 2023, in Warsaw. (AP Photo/ Evan Vucci)
            
              President Joe Biden, right, is greeted by Polish President Andrzej Duda, Wednesday, Feb. 22, 2023, at the Presidential Palace in Warsaw. (AP Photo/ Evan Vucci)
            
              President Joe Biden participates in a meeting with the leaders of the Bucharest Nine, a group of nine countries that make up the eastern flank of NATO, Wednesday, Feb. 22, 2023, in Warsaw. (AP Photo/ Evan Vucci)
            
              Russian President Vladimir Putin greets Chinese Communist Party's foreign policy chief Wang Yi during their meeting at the Kremlin in Moscow, Russia, Wednesday, Feb. 22, 2023. (Anton Novoderezhkin, Sputnik, Kremlin Pool Photo via AP)
            
              President Joe Biden speaks during a meeting with the leaders of the Bucharest Nine, a group of nine countries that make up the eastern flank of NATO, Wednesday, Feb. 22, 2023, in Warsaw. (AP Photo/ Evan Vucci)
            
              President Joe Biden walks across the South Lawn of the White House in Washington, Wednesday, Feb 22, 2023, after returning from his trip to Ukraine and Poland. (AP Photo/Susan Walsh)
            
              President Joe Biden boards Air Force One at Warsaw Chopin International Airport, Wednesday, Feb. 22, 2023, in Warsaw. (AP Photo/ Evan Vucci)
            
              President Joe Biden, right, is greeted by Polish President Andrzej Duda, Wednesday, Feb. 22, 2023, at the Presidential Palace in Warsaw. (AP Photo/ Evan Vucci)
            
              President Joe Biden participates in a meeting with the leaders of the Bucharest Nine, a group of nine countries that make up the eastern flank of NATO, Wednesday, Feb. 22, 2023, in Warsaw. (AP Photo/ Evan Vucci)
            
              Russian President Vladimir Putin greets Chinese Communist Party's foreign policy chief Wang Yi during their meeting at the Kremlin in Moscow, Russia, Wednesday, Feb. 22, 2023. (Anton Novoderezhkin, Sputnik, Kremlin Pool Photo via AP)
            
              President Joe Biden speaks during a meeting with the leaders of the Bucharest Nine, a group of nine countries that make up the eastern flank of NATO, Wednesday, Feb. 22, 2023, in Warsaw. (AP Photo/ Evan Vucci)
            
              President Joe Biden walks across the South Lawn of the White House in Washington, Wednesday, Feb 22, 2023, after returning from his trip to Ukraine and Poland. (AP Photo/Susan Walsh)
            
              President Joe Biden boards Air Force One at Warsaw Chopin International Airport, Wednesday, Feb. 22, 2023, in Warsaw. (AP Photo/ Evan Vucci)
            
              President Joe Biden, right, is greeted by Polish President Andrzej Duda, Wednesday, Feb. 22, 2023, at the Presidential Palace in Warsaw. (AP Photo/ Evan Vucci)
            
              President Joe Biden participates in a meeting with the leaders of the Bucharest Nine, a group of nine countries that make up the eastern flank of NATO, Wednesday, Feb. 22, 2023, in Warsaw. (AP Photo/ Evan Vucci)
            
              Russian President Vladimir Putin greets Chinese Communist Party's foreign policy chief Wang Yi during their meeting at the Kremlin in Moscow, Russia, Wednesday, Feb. 22, 2023. (Anton Novoderezhkin, Sputnik, Kremlin Pool Photo via AP)
            
              President Joe Biden speaks during a meeting with the leaders of the Bucharest Nine, a group of nine countries that make up the eastern flank of NATO, Wednesday, Feb. 22, 2023, in Warsaw. (AP Photo/ Evan Vucci)
            
              President Joe Biden boards Air Force One at Warsaw Chopin International Airport, Wednesday, Feb. 22, 2023, in Warsaw. (AP Photo/ Evan Vucci)
            
              President Joe Biden, right, is greeted by Polish President Andrzej Duda, Wednesday, Feb. 22, 2023, at the Presidential Palace in Warsaw. (AP Photo/ Evan Vucci)
            
              President Joe Biden participates in a meeting with the leaders of the Bucharest Nine, a group of nine countries that make up the eastern flank of NATO, Wednesday, Feb. 22, 2023, in Warsaw. (AP Photo/ Evan Vucci)
            
              Russian President Vladimir Putin greets Chinese Communist Party's foreign policy chief Wang Yi during their meeting at the Kremlin in Moscow, Russia, Wednesday, Feb. 22, 2023. (Anton Novoderezhkin, Sputnik, Kremlin Pool Photo via AP)
            
              President Joe Biden speaks during a meeting with the leaders of the Bucharest Nine, a group of nine countries that make up the eastern flank of NATO, Wednesday, Feb. 22, 2023, in Warsaw. (AP Photo/ Evan Vucci)
            
              President Joe Biden boards Air Force One at Warsaw Chopin International Airport, Wednesday, Feb. 22, 2023, in Warsaw. (AP Photo/ Evan Vucci)
            
              President Joe Biden, right, is greeted by Polish President Andrzej Duda, Wednesday, Feb. 22, 2023, at the Presidential Palace in Warsaw. (AP Photo/ Evan Vucci)
            
              President Joe Biden participates in a meeting with the leaders of the Bucharest Nine, a group of nine countries that make up the eastern flank of NATO, Wednesday, Feb. 22, 2023, in Warsaw. (AP Photo/ Evan Vucci)
            
              Russian President Vladimir Putin greets Chinese Communist Party's foreign policy chief Wang Yi during their meeting at the Kremlin in Moscow, Russia, Wednesday, Feb. 22, 2023. (Anton Novoderezhkin, Sputnik, Kremlin Pool Photo via AP)
            
              President Joe Biden speaks during a meeting with the leaders of the Bucharest Nine, a group of nine countries that make up the eastern flank of NATO, Wednesday, Feb. 22, 2023, in Warsaw. (AP Photo/ Evan Vucci)
            
              President Joe Biden boards Air Force One at Warsaw Chopin International Airport, Wednesday, Feb. 22, 2023, in Warsaw. (AP Photo/ Evan Vucci)
            
              President Joe Biden, right, is greeted by Polish President Andrzej Duda, Wednesday, Feb. 22, 2023, at the Presidential Palace in Warsaw. (AP Photo/ Evan Vucci)
            
              President Joe Biden participates in a meeting with the leaders of the Bucharest Nine, a group of nine countries that make up the eastern flank of NATO, Wednesday, Feb. 22, 2023, in Warsaw. (AP Photo/ Evan Vucci)
            
              Russian President Vladimir Putin greets Chinese Communist Party's foreign policy chief Wang Yi during their meeting at the Kremlin in Moscow, Russia, Wednesday, Feb. 22, 2023. (Anton Novoderezhkin, Sputnik, Kremlin Pool Photo via AP)
            
              President Joe Biden speaks during a meeting with the leaders of the Bucharest Nine, a group of nine countries that make up the eastern flank of NATO, Wednesday, Feb. 22, 2023, in Warsaw. (AP Photo/ Evan Vucci)
            
              President Joe Biden boards Air Force One at Warsaw Chopin International Airport, Wednesday, Feb. 22, 2023, in Warsaw. (AP Photo/ Evan Vucci)
            
              President Joe Biden boards Air Force One at Warsaw Chopin International Airport, Wednesday, Feb. 22, 2023, in Warsaw. (AP Photo/ Evan Vucci)
            
              President Joe Biden, right, is greeted by Polish President Andrzej Duda, Wednesday, Feb. 22, 2023, at the Presidential Palace in Warsaw. (AP Photo/ Evan Vucci)
            
              President Joe Biden, right, is greeted by Polish President Andrzej Duda, Wednesday, Feb. 22, 2023, at the Presidential Palace in Warsaw. (AP Photo/ Evan Vucci)
            
              President Joe Biden participates in a meeting with the leaders of the Bucharest Nine, a group of nine countries that make up the eastern flank of NATO, Wednesday, Feb. 22, 2023, in Warsaw. (AP Photo/ Evan Vucci)
            
              President Joe Biden participates in a meeting with the leaders of the Bucharest Nine, a group of nine countries that make up the eastern flank of NATO, Wednesday, Feb. 22, 2023, in Warsaw. (AP Photo/ Evan Vucci)
            
              Russian President Vladimir Putin greets Chinese Communist Party's foreign policy chief Wang Yi during their meeting at the Kremlin in Moscow, Russia, Wednesday, Feb. 22, 2023. (Anton Novoderezhkin, Sputnik, Kremlin Pool Photo via AP)
            
              Russian President Vladimir Putin greets Chinese Communist Party's foreign policy chief Wang Yi during their meeting at the Kremlin in Moscow, Russia, Wednesday, Feb. 22, 2023. (Anton Novoderezhkin, Sputnik, Kremlin Pool Photo via AP)
            
              President Joe Biden speaks during a meeting with the leaders of the Bucharest Nine, a group of nine countries that make up the eastern flank of NATO, Wednesday, Feb. 22, 2023, in Warsaw. (AP Photo/ Evan Vucci)
            
              President Joe Biden speaks during a meeting with the leaders of the Bucharest Nine, a group of nine countries that make up the eastern flank of NATO, Wednesday, Feb. 22, 2023, in Warsaw. (AP Photo/ Evan Vucci)
            
              President Joe Biden boards Air Force One at Warsaw Chopin International Airport, Wednesday, Feb. 22, 2023, in Warsaw. (AP Photo/ Evan Vucci)
            
              President Joe Biden, right, is greeted by Polish President Andrzej Duda, Wednesday, Feb. 22, 2023, at the Presidential Palace in Warsaw. (AP Photo/ Evan Vucci)
            
              President Joe Biden participates in a meeting with the leaders of the Bucharest Nine, a group of nine countries that make up the eastern flank of NATO, Wednesday, Feb. 22, 2023, in Warsaw. (AP Photo/ Evan Vucci)
            
              Russian President Vladimir Putin greets Chinese Communist Party's foreign policy chief Wang Yi during their meeting at the Kremlin in Moscow, Russia, Wednesday, Feb. 22, 2023. (Anton Novoderezhkin, Sputnik, Kremlin Pool Photo via AP)
            
              President Joe Biden speaks during a meeting with the leaders of the Bucharest Nine, a group of nine countries that make up the eastern flank of NATO, Wednesday, Feb. 22, 2023, in Warsaw. (AP Photo/ Evan Vucci)
            
              President Joe Biden boards Air Force One at Warsaw Chopin International Airport, Wednesday, Feb. 22, 2023, in Warsaw. (AP Photo/ Evan Vucci)
            
              President Joe Biden, right, is greeted by Polish President Andrzej Duda, Wednesday, Feb. 22, 2023, at the Presidential Palace in Warsaw. (AP Photo/ Evan Vucci)
            
              President Joe Biden participates in a meeting with the leaders of the Bucharest Nine, a group of nine countries that make up the eastern flank of NATO, Wednesday, Feb. 22, 2023, in Warsaw. (AP Photo/ Evan Vucci)
            
              Russian President Vladimir Putin greets Chinese Communist Party's foreign policy chief Wang Yi during their meeting at the Kremlin in Moscow, Russia, Wednesday, Feb. 22, 2023. (Anton Novoderezhkin, Sputnik, Kremlin Pool Photo via AP)
            
              President Joe Biden speaks during a meeting with the leaders of the Bucharest Nine, a group of nine countries that make up the eastern flank of NATO, Wednesday, Feb. 22, 2023, in Warsaw. (AP Photo/ Evan Vucci)
            
              President Joe Biden boards Air Force One at Warsaw Chopin International Airport, Wednesday, Feb. 22, 2023, in Warsaw. (AP Photo/ Evan Vucci)
            
              President Joe Biden, right, is greeted by Polish President Andrzej Duda, Wednesday, Feb. 22, 2023, at the Presidential Palace in Warsaw. (AP Photo/ Evan Vucci)
            
              President Joe Biden participates in a meeting with the leaders of the Bucharest Nine, a group of nine countries that make up the eastern flank of NATO, Wednesday, Feb. 22, 2023, in Warsaw. (AP Photo/ Evan Vucci)
            
              Russian President Vladimir Putin greets Chinese Communist Party's foreign policy chief Wang Yi during their meeting at the Kremlin in Moscow, Russia, Wednesday, Feb. 22, 2023. (Anton Novoderezhkin, Sputnik, Kremlin Pool Photo via AP)
            
              President Joe Biden speaks during a meeting with the leaders of the Bucharest Nine, a group of nine countries that make up the eastern flank of NATO, Wednesday, Feb. 22, 2023, in Warsaw. (AP Photo/ Evan Vucci)
            
              President Joe Biden boards Air Force One at Warsaw Chopin International Airport, Wednesday, Feb. 22, 2023, in Warsaw. (AP Photo/ Evan Vucci)
            
              President Joe Biden, right, is greeted by Polish President Andrzej Duda, Wednesday, Feb. 22, 2023, at the Presidential Palace in Warsaw. (AP Photo/ Evan Vucci)
            
              President Joe Biden participates in a meeting with the leaders of the Bucharest Nine, a group of nine countries that make up the eastern flank of NATO, Wednesday, Feb. 22, 2023, in Warsaw. (AP Photo/ Evan Vucci)
            
              President Joe Biden speaks during a meeting with the leaders of the Bucharest Nine, a group of nine countries that make up the eastern flank of NATO, Wednesday, Feb. 22, 2023, in Warsaw. (AP Photo/ Evan Vucci)
            
              President Joe Biden boards Air Force One at Warsaw Chopin International Airport, Wednesday, Feb. 22, 2023, in Warsaw. (AP Photo/ Evan Vucci)
            
              President Joe Biden, right, is greeted by Polish President Andrzej Duda, Wednesday, Feb. 22, 2023, at the Presidential Palace in Warsaw. (AP Photo/ Evan Vucci)
            
              President Joe Biden participates in a meeting with the leaders of the Bucharest Nine, a group of nine countries that make up the eastern flank of NATO, Wednesday, Feb. 22, 2023, in Warsaw. (AP Photo/ Evan Vucci)
            
              President Joe Biden speaks during a meeting with the leaders of the Bucharest Nine, a group of nine countries that make up the eastern flank of NATO, Wednesday, Feb. 22, 2023, in Warsaw. (AP Photo/ Evan Vucci)
            
              President Joe Biden boards Air Force One at Warsaw Chopin International Airport, Wednesday, Feb. 22, 2023, in Warsaw. (AP Photo/ Evan Vucci)
            
              President Joe Biden participates in a meeting with the leaders of the Bucharest Nine, a group of nine countries that make up the eastern flank of NATO, Wednesday, Feb. 22, 2023, in Warsaw. (AP Photo/ Evan Vucci)
            
              President Joe Biden speaks during a meeting with the leaders of the Bucharest Nine, a group of nine countries that make up the eastern flank of NATO, Wednesday, Feb. 22, 2023, in Warsaw. (AP Photo/ Evan Vucci)
            
              President Joe Biden boards Air Force One at Warsaw Chopin International Airport, Wednesday, Feb. 22, 2023, in Warsaw. (AP Photo/ Evan Vucci)
            
              President Joe Biden, right, is greeted by Polish President Andrzej Duda, Wednesday, Feb. 22, 2023, at the Presidential Palace in Warsaw. (AP Photo/ Evan Vucci)
            
              President Joe Biden participates in a meeting with the leaders of the Bucharest Nine, a group of nine countries that make up the eastern flank of NATO, Wednesday, Feb. 22, 2023, in Warsaw. (AP Photo/ Evan Vucci)
            
              President Joe Biden speaks during a meeting with the leaders of the Bucharest Nine, a group of nine countries that make up the eastern flank of NATO, Wednesday, Feb. 22, 2023, in Warsaw. (AP Photo/ Evan Vucci)
            
              President Joe Biden boards Air Force One at Warsaw Chopin International Airport, Wednesday, Feb. 22, 2023, in Warsaw. (AP Photo/ Evan Vucci)
            
              President Joe Biden, right, is greeted by Polish President Andrzej Duda, Wednesday, Feb. 22, 2023, at the Presidential Palace in Warsaw. (AP Photo/ Evan Vucci)
            
              President Joe Biden participates in a meeting with the leaders of the Bucharest Nine, a group of nine countries that make up the eastern flank of NATO, Wednesday, Feb. 22, 2023, in Warsaw. (AP Photo/ Evan Vucci)
            
              President Joe Biden speaks during a meeting with the leaders of the Bucharest Nine, a group of nine countries that make up the eastern flank of NATO, Wednesday, Feb. 22, 2023, in Warsaw. (AP Photo/ Evan Vucci)
            
              President Joe Biden boards Air Force One at Warsaw Chopin International Airport, Wednesday, Feb. 22, 2023, in Warsaw. (AP Photo/ Evan Vucci)
            
              President Joe Biden, right, is greeted by Polish President Andrzej Duda, Wednesday, Feb. 22, 2023, at the Presidential Palace in Warsaw. (AP Photo/ Evan Vucci)
            
              President Joe Biden participates in a meeting with the leaders of the Bucharest Nine, a group of nine countries that make up the eastern flank of NATO, Wednesday, Feb. 22, 2023, in Warsaw. (AP Photo/ Evan Vucci)
            
              President Joe Biden speaks during a meeting with the leaders of the Bucharest Nine, a group of nine countries that make up the eastern flank of NATO, Wednesday, Feb. 22, 2023, in Warsaw. (AP Photo/ Evan Vucci)
            
              President Joe Biden boards Air Force One at Warsaw Chopin International Airport, Wednesday, Feb. 22, 2023, in Warsaw. (AP Photo/ Evan Vucci)
            
              President Joe Biden, right, is greeted by Polish President Andrzej Duda, Wednesday, Feb. 22, 2023, at the Presidential Palace in Warsaw. (AP Photo/ Evan Vucci)
            
              President Joe Biden participates in a meeting with the leaders of the Bucharest Nine, a group of nine countries that make up the eastern flank of NATO, Wednesday, Feb. 22, 2023, in Warsaw. (AP Photo/ Evan Vucci)
            
              President Joe Biden speaks during a meeting with the leaders of the Bucharest Nine, a group of nine countries that make up the eastern flank of NATO, Wednesday, Feb. 22, 2023, in Warsaw. (AP Photo/ Evan Vucci)
            
              President Joe Biden, right, is greeted by Polish President Andrzej Duda, Wednesday, Feb. 22, 2023, at the Presidential Palace in Warsaw. (AP Photo/ Evan Vucci)
            
              President Joe Biden listens as Romanian President Klaus Iohannis speaks during a meeting with the leaders of the Bucharest Nine, a group of nine countries that make up the eastern flank of NATO, Wednesday, Feb. 22, 2023, in Warsaw. (AP Photo/ Evan Vucci)
            
              President Joe Biden participates in a meeting with the leaders of the Bucharest Nine, a group of nine countries that make up the eastern flank of NATO, Wednesday, Feb. 22, 2023, in Warsaw. (AP Photo/ Evan Vucci)
            
              President Joe Biden speaks during a meeting with the leaders of the Bucharest Nine, a group of nine countries that make up the eastern flank of NATO, Wednesday, Feb. 22, 2023, in Warsaw. (AP Photo/ Evan Vucci)
            
              President Joe Biden, right, is greeted by Polish President Andrzej Duda, Wednesday, Feb. 22, 2023, at the Presidential Palace in Warsaw. (AP Photo/ Evan Vucci)
            
              President Joe Biden, right, is greeted by Polish President Andrzej Duda, Wednesday, Feb. 22, 2023, at the Presidential Palace in Warsaw. (AP Photo/ Evan Vucci)
            
              President Joe Biden, right, is greeted by Polish President Andrzej Duda, Wednesday, Feb. 22, 2023, at the Presidential Palace in Warsaw. (AP Photo/ Evan Vucci)
            
              President Joe Biden, right, is greeted by Polish President Andrzej Duda, Wednesday, Feb. 22, 2023, at the Presidential Palace in Warsaw. (AP Photo/ Evan Vucci)
            
              President Joe Biden, right, is greeted by Polish President Andrzej Duda, Wednesday, Feb. 22, 2023, at the Presidential Palace in Warsaw. (AP Photo/ Evan Vucci)
            
              President Joe Biden, right, is greeted by Polish President Andrzej Duda, Wednesday, Feb. 22, 2023, at the Presidential Palace in Warsaw. (AP Photo/ Evan Vucci)
            
              President Joe Biden, right, is greeted by Polish President Andrzej Duda, Wednesday, Feb. 22, 2023, at the Presidential Palace in Warsaw. (AP Photo/ Evan Vucci)
            
              President Joe Biden, right, is greeted by Polish President Andrzej Duda, Wednesday, Feb. 22, 2023, at the Presidential Palace in Warsaw. (AP Photo/ Evan Vucci)
            
              People use their cellphones as President Joe Biden holds a speech at the Royal Castle after meeting with Polish President Andrzej Duda in Warsaw, Poland, Tuesday, Feb. 21, 2023. (AP Photo/Michal Dyjuk)
            
              President Joe Biden holds a speech at the Royal Castle after meeting with Polish President Andrzej Duda in Warsaw, Poland, Tuesday, Feb. 21, 2023. (AP Photo/Michal Dyjuk)
            
              People gather to watch speech of US President Joe Biden downtown Warsaw, Poland, Tuesday, Feb. 21, 2023. (AP Photo/Czarek Sokolowski)
            
              President Joe Biden smiles after his speech at the Royal Castle in Warsaw, Poland, Tuesday, Feb. 21, 2023. (AP Photo/Michal Dyjuk)
            
              People listen as President Joe Biden delivers a speech marking the one-year anniversary of the Russian invasion of Ukraine, at the Royal Castle Gardens, Tuesday, Feb. 21, 2023, in Warsaw. (AP Photo/ Evan Vucci)
            
              President Joe Biden delivers a speech marking the one-year anniversary of the Russian invasion of Ukraine, Tuesday, Feb. 21, 2023, at the Royal Castle Gardens in Warsaw. (AP Photo/ Evan Vucci)
            
              President Joe Biden delivers a speech marking the one-year anniversary of the Russian invasion of Ukraine, at the Royal Castle Gardens, Tuesday, Feb. 21, 2023, in Warsaw. (AP Photo/ Evan Vucci)
Biden to meet eastern flank NATO leaders amid Russia worries