The lopsided bipartisan vote demonstrated broad support in the United States for one of the most significant expansions of the military alliance, amid Russia’s continued assault on Ukraine.
The change was a victory for President Biden and a setback to President Vladimir V. Putin of Russia, who had justified the Ukraine invasion as a warning against NATO’s expansion.
Finnish and Swedish hopes of being accepted as applicants by next week’s NATO summit meeting have been dashed by a Turkish government that says it is in no hurry.