A meeting of foreign ministers from the Bucharest Nine (B9) will focus on security in Central and Eastern Europe, a presidential advisor said on Thursday morning.
Bucharest Nine (B9), the nine Nato members constituting the bloc's eastern flank, have vowed to support each other in the event of any threat.
Shortly after 5:50 p.m. on Wednesday, Air Force One with US President Joe Biden on board departed from Warsaw's Chopin Airport .
Nato must not allow Russia to continue to undermine European Security, the bloc's secretary general, Jens Stoltenberg, has said.
The US treats the common defence provision of the Nato treaty as "a sacred commitment", Biden says in Warsaw.
US President Joe Biden and Nato Secretary General Jens Stoltenberg will attend a summit meeting of the Bucharest Nine on Wednesday in Warsaw.
Nato's commitment to the principle of common defence is 'rock solid', US President Joe Biden said in Warsaw on Tuesday.
Poland expects Nato to draft new security plans for the bloc's eastern flank, the Polish president said after a meeting with Nato's secretary general.
The White House spokeswoman said on Friday that President Joe Biden will visit Poland on February 20-22, he will meet with President Andrzej Duda, hold a meeting with the leaders of the Bucharest Nine and give a speech before the anniversary of the Russian invasion of Ukraine.
Belarus is still forcing migrants to illegally cross the border with Poland as the Minsk government tries to destabilise its neighbour, the Polish defence minister has said.