The United States plans to accept up to 100,000 Ukrainians fleeing Russia’s invasion, the Biden administration announced on Thursday, after a month of bombardments touched off Europe’s fastest-moving refugee crisis since the end of World War Two.

The announcement coincided with U.S. President Joe Biden’s meeting with European leaders in Brussels on Thursday to coordinate the Western response to the crisis.Report ad

More than 3.5 million people have fled since Russia invaded Ukraine on Feb. 24, according to the United Nations, straining support systems in the neighboring European countries receiving them.

Russia calls the assault on Ukraine a “special operation.”

The Biden administration said in a statement it would use “the full range of legal pathways,” including the refugee resettlement program, for Ukrainians seeking to come to the United States.Report ad

Reuters previously reported the Biden administration will also utilize family-based visas or another temporary process known as “humanitarian parole.”

Before the crisis erupted in Ukraine, Biden launched the nation’s largest U.S. resettlement program since the Vietnam War by accepting about 80,000 Afghans after U.S. troops left Afghanistan following 20 years of war.

Now he has said the United States would welcome Ukrainians fleeing war, but administration officials have said they believe most will want to stay in Europe where they can travel visa-free and have family and friends.Report ad

Eastern European countries, most notably Poland, have received hundreds of thousands of people escaping the Russian shelling of cities and towns across Ukraine. Those countries want additional assistance from other nations to take in refugees, with the European Union set to discuss “fair burden sharing.”