Finland to Allow Transit of Nuclear Weapons, Aligning with NATO Deterrence

Finland is set to lift its long-standing ban on allowing the import of nuclear weapons, a move designed to strengthen the credibility of NATO’s nuclear deterrent. The decision, announced on Thursday, March 6, 2026, marks a significant shift in Finnish defense policy following its accession to NATO in April 2023.

Current and Proposed Laws Regarding Nuclear Weapons

Currently, Finnish law prohibits nuclear explosives in all forms – importation, manufacture, possession, and detonation within its territory. This ban was initially implemented in the 1980s to avoid provoking the Soviet Union and prevent Finland from becoming a platform for Soviet nuclear policy. The proposed change will allow the transport of nuclear weapons through Finnish territory in situations related to the defense of Finland, including its land, sea, and airspace.

Why the Change?

The government states that loosening nuclear restrictions is crucial for bolstering NATO’s nuclear deterrence. Defense Secretary Antti Häkkänen explained that the change is necessary to enhance security and ensure Finland receives full protection in all situations. Finland’s NATO membership has altered its strategic landscape, and the government argues that the previous restrictions complicated NATO’s nuclear deterrence planning and joint training exercises.

What Kind of Nuclear Weapons Could Be Transported?

Defense Minister Häkkänen declined to provide specific examples of scenarios involving the transport of nuclear weapons, citing the classified nature of NATO’s nuclear weapons policy. However, it is understood that the change would facilitate the movement of nuclear weapons aboard NATO aircraft flying over or within Finnish territory.

Will Finland Become a Nuclear Weapon State?

Both President Alexander Stubb and Defense Minister Häkkänen have affirmed that Finland will not become a nuclear weapon state. There are currently no plans to permanently station nuclear weapons on Finnish soil, which would require a separate state treaty processed by the parliament and government.

NATO’s Nuclear Deterrence

NATO’s nuclear deterrence relies on the United States’ nuclear weapons, which are deployed in several European countries. France and the United Kingdom also maintain their own independent nuclear arsenals. Discussions are ongoing in Europe regarding extending France’s nuclear deterrent to encompass the rest of Europe, potentially supplementing NATO’s existing capabilities, though Finland has not yet participated in these discussions.

Political Support and Opposition

The governing coalition, including the National Coalition Party, Basic Finns, Swedish People’s Party, and Christian Democrats, strongly supports the proposed law change. Prime Minister Petteri Orpo and President Stubb have both publicly endorsed allowing the transit of nuclear weapons. The opposition parties – the Social Democratic Party, the Green League, and the Left Alliance – have voiced strong opposition, criticizing the government for preparing the matter in secrecy and bypassing parliamentary preparation. The government maintains that secrecy was necessary due to the sensitivity of the issue.

Next Steps

The Ministry of Defense will submit a proposal for the legislative change for a statement round. The government intends to present the legislative proposals directly to parliament as a government proposal, bypassing the usual parliamentary preparation process. The government aims to have the legal changes processed by the summer and plans to share classified information on the matter with all members of parliament.