On , roughly a month after Russia launched a full-scale invasion of Ukraine, U.S. president Joe Biden delivered a speech at the Royal Castle in Warsaw, Poland. During the speech, he framed the military struggle in Ukraine as a fight between autocracy and democracy, and confirmed that under NATO's Article 5, the troops of NATO have "a sacred obligation ... to defend each and every inch of NATO territory with the full force of our collective power". He also praised the "brave and stiff Ukrainian resistance" and "the generosity of ... the Polish people", while making it clear that "the Russian people ... are not our enemy". Near the end of his speech, Biden referred to Russian president Vladimir Putin when he said, "For God's sake, this man cannot remain in power." A number of world leaders expressed disapproval over this statement. The Biden administration later stated that these words had not been part of the prepared speech, and that the administration was not proposing a regime change. This remark overshadowed the rest of Biden's speech. About 11 months later, Biden returned to Warsaw to deliver another speech, in which he reiterated that the current conflict was a fight between democracy and autocracy, and reaffirmed NATO's commitment to Article 5. Background Russia launched a full-scale invasion of Ukraine on . In response, NATO scheduled an an extraordinary summit in Brussels, Belgium, to take place on the first day of a previously scheduled meeting of the European Council in Brussels, on . German chancellor Olaf Scholz, who held the rotating presidency of the G7 that year, invited the other G7 leaders to a summit to be held on the same day in Brussels. In March, U.S. president Joe Biden flew to Europe and attended all three meetings in person. Afterward, Biden continued on to Poland, where he spoke to U.S. troops, conferred with Polish president Andrzej Duda, and met with humanitarian aid workers and Ukrainian refugees. After seeing the refugees gathered at Warsaw's Stadion Narodowy ('national stadium'), when asked what he thought of Russian president Vladimir Putin, Biden said, "He's a butcher." At the end of his trip, Biden delivered a speech at the Royal Castle in Warsaw, on the evening of , after rockets had struck a fuel depot in the western Ukrainian city of Lviv earlier that day. Biden had spoken in Warsaw previously, at the University of Warsaw