Biden to rally NATO allies as Ukraine war gets more complicated

After paying an unannounced visit to Kyiv, Joe Biden made his way to Warsaw on Monday on a mission to solidify Western unity as both Ukraine and Russia prepare to launch spring offensives

U.S. President Joe Biden is set to consult with allies from NATO's eastern flank in Poland on Tuesday as the Russian invasion of Ukraine edges toward an even more complicated stage.

After paying an unannounced visit to Kyiv, Mr. Biden made his way to Warsaw on Monday on a mission to solidify Western unity as both Ukraine and Russia prepare to launch spring offensives. The conflict — the most significant war in Europe since World War II — has already left tens of thousands dead, devastated Ukraine’s infrastructure system and damaged the global economy.

“I thought it was critical that there not be any doubt, none whatsoever, about U.S. support for Ukraine in the war,” Mr. Biden said as he stood with Ukrainian President Volodomyr Zelenskyy in Kyiv before departing for Poland. “The Ukrainian people have stepped up in a way that few people ever have in the past.”

Mr. Biden is scheduled to meet with Polish President Andrzej Duda and deliver an address from the gardens of Warsaw's Royal Castle on Tuesday, where he’s expected to highlight the commitment of the central European country and other allies to Ukraine over the past year. On Wednesday, he’ll consult with Mr. Duda and other leaders of the Bucharest Nine, a group of the easternmost members of NATO military alliance.

White House national security adviser Jake Sullivan said Mr. Biden would underscore in his Warsaw address that Russian President Vladimir Putin wrongly surmised “that Ukraine would cower and that the West would be divided” when he launched his invasion.

“He got the opposite of that across the board,” Mr. Sullivan said.

While Mr. Biden is looking to use his whirlwind trip to Europe as a moment of affirmation for Ukraine and allies, the White House has also emphasized that there is no clear endgame to the war in the near term and the situation on the ground has become increasingly complex.