Sweden's prime minister's officially confirmed the country will apply to join Nato.
The nordic country follows Finland in making the announcement, ending a history of military neutrality.
The shift in policy's been prompted by Moscow's invasion of Ukraine.
Russian President Vladimir Putin's given his response to the move.
"Russia, I would like to remind your colleagues, does not have any problem with those countries
"There this is not an immediate treat to Russia with the inclusion of these countries.
"But the expansion of military infrastructure over that territory, will obviously call for our response."