Finland's parliament voted on June 17 to lift the country's decades-old ban on nuclear weapons with 125 votes in favor, 61 against, and 13 abstentions [1, 2, 3, 4]. The vote amended the Nuclear Energy Act by repealing provisions that banned the import, production, possession, and detonation of nuclear explosives in Finland [1, 3, 4].

The change marks a major shift in Finland's defense policy, aligning the country more closely with NATO's nuclear deterrence strategy after joining the military alliance in April 2023 following Russia's 2022 invasion of Ukraine [1, 2, 3, 4]. Defense Minister Antti Häkkänen called the reform "historic" and said it "strengthens the security of Finland and of NATO as a whole." He emphasized Finland does not plan to permanently host nuclear weapons on its soil [1, 2, 3, 4].

In May 2026, Finland detected a suspected drone near Helsinki and responded with fighter jets, though the president said there was no direct military threat encountered [1, 2]. The country is also considering participation in a European nuclear deterrence plan endorsed by French President Emmanuel Macron [1, 2].

Opposition lawmakers warned that repealing the nuclear ban could escalate regional tensions and make Finland a potential nuclear target, breaking long-standing regional norms of non-nuclear hosting [3, 4]. Russia condemned the policy change, with Kremlin spokesman Dmitry Peskov stating, "This is a statement that leads to an escalation of tensions on the European continent. If Finland threatens Russia, we will take appropriate measures" [3, 4].

Finland shares a border of over 1,300 km with Russia, adding to the strategic sensitivity of the decision [1, 2]. The repeal formally ends Finnish military non-alignment and brings its defense policy into closer coordination with NATO nuclear deterrence.

The next significant event will be Finland's parliamentary debates on possible future participation in the European nuclear deterrence plan, as the government evaluates how to integrate the new legal framework with alliance requirements [1, 2].