President Joe Biden formally welcomed Finland and Sweden joining the NATO alliance Tuesday as he signed the instruments of ratification that delivered the U.S.'s formal backing of the Nordic nations entering the mutual defense pact, part of a reshaping of the European security posture after Russia's invasion of Ukraine.
“In seeking to join NATO, Finland and Sweden are making a sacred commitment that an attack against one is an attack against all," Biden said at the signing as he called the partnership the “indispensable alliance.”
