“I look forward to signing the accession protocols and hail Sweden and Finland ... in the ranks of the greatest defensive alliance in history,” the White House said in a statement.

Biden stressed that the US remains committed to the security of Sweden and Finland and will continue to remain vigilant together "against any possible threat to joint security."

The US Senate voted earlier to adopt a resolution on the ratification of the protocols on the accession of Finland and Sweden to NATO.

However, in order for Finland and Sweden to join NATO, all 30 bloc member countries must approve the necessary documents.

Russian leader Vladimir Putin has repeatedly stressed that Moscow will be forced to respond mirror to the deployment of NATO military infrastructure in Finland and Sweden after the entry of these states into the alliance.