The United States Senate on Wednesday overwhelmingly voted to approve North Atlantic Treaty Organization (NATO) membership for Sweden and Finland.

The upper house voted 95 in favor and one against to expand the bloc of American and European allies, with the membership bid of Sweden and Finland prompted by Russia's invasion of Ukraine.

"It sends a warning shot to tyrants around the world who believe free democracies are just up for grabs," Senator Amy Klobuchar said. "Russia's unprovoked invasion has changed the way we think about world security."