Finnish Prime Minister Sanna Marin said Thursday that Helsinki is opposed to NATO deploying nuclear weapons or establishing bases inside Finland if it joins the military alliance.

Marin said she didn't think there was much interest in NATO for nuclear deployments or permanent bases inside Finland. "Nor do I think there is any interest in deploying nuclear weapons or opening NATO bases in Finland," she emphasized. Swedish Prime Minister Magdalena Andersson has also said Sweden doesn't plan on hosting NATO nuclear weapons or bases.

While the US, Britain, and France are the only NATO members with their own nuclear stockpiles, US nuclear weapons are deployed in other NATO states under a nuclear-sharing agreement. Under the agreement, there are US nuclear weapons in Belgium, Germany, Italy, the Netherlands, and Turkey.

Russian President Vladimir Putin has warned that Moscow will respond to the expansion of NATO military infrastructure inside Sweden or Finland. Top Kremlin officials have recently warned of a nuclear build-up in the Baltics if Finland is admitted into NATO, as Newsweek reports: