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Umbrella state (NATO)

Finland abstained on the annual UN General Assembly resolutions on the Treaty until 2021, but changed to a no vote in 2022 after having applied for NATO membership and embraced the alliance's nuclear doctrine.

TPNW Status

TPNW Article 1(1) prohibitions: Compatibility in 2022
(a) Develop, produce, manufacture, acquire Compatible
Test Compatible
Possess or stockpile Compatible
(b) Transfer Compatible
(c) Receive transfer or control Compatible
(d) Use Compatible
Threaten to use Compatible
(e) Assist, encourage or induce Not compatible
(f) Seek or receive assistance Compatible
(g) Allow stationing, installation, deployment Compatible
TPNW voting and participation
UNGA resolution on TPNW (latest vote) Voted no (2023)
Participated in 1MSP (2022) Observer
1MSP delegation size (% women) 3 (33%)
Adoption of TPNW (7 July 2017) N/A
Participated in TPNW negotiations (2017) No
Negotiation mandate (A/RES/71/258) Abstained
Other weapons of mass destruction (WMD) treaties
Party to an NWFZ No
Party to the NPT Yes (Ratified 1969)
Ratified the CTBT Yes (Ratified 1999, Annex 2 state)
Party to the BWC Yes (Ratified 1974)
Party to the CWC Yes (Ratified 1995)
IAEA safeguards and fissile material
Safeguards agreement Yes (12 Sep 1981)
TPNW Art 3(2) deadline N/A
Small Quantities Protocol No
Additional Protocol Yes
Enrichment facilities/reprocessing plants No
HEU stocks No
Plutonium stocks No

Latest developments

In connection with Finland’s application to NATO in May 2022, the Foreign Affairs Committee of the Parliament of Finland issued a statement indicating that, as a NATO member, Finland would retain ‘its high profile in matters of disarmament, including nuclear disarmament, without questioning the role of NATO’s nuclear deterrence’.2

Finland submitted a letter of intent to NATO in July 2022, declaring that it accepts ‘NATO’s approach to security and defence, including the essential role of nuclear weapons’ and that it is ‘willing to commit forces and capabilities for the full range of Alliance missions.’3

Finland attended as an observer the First Meeting of States Parties to the TPNW (1MSP) in Vienna in June 2022, but did not make a statement.

In the First Committee of the UN General Assembly in October 2022, it said: ‘Nuclear weapons pose a risk for every nation. A nuclear weapon detonation would have catastrophic humanitarian consequences. It is in our common interest to reduce risks for any nuclear weapon use – intended or unintended.’4


  • Finland should renounce the possession and potential use of nuclear weapons on its behalf, and ensure that nuclear weapons do not have a role in its defence posture.

  • Finland should comply with its existing obligation under Article VI of the Treaty on the Non-Proliferation of Nuclear Weapons (NPT) and pursue negotiations in good faith on nuclear disarmament.

  • Finland should urgently adhere to the TPNW. Until it is in a position to do so, it should welcome the TPNW as a valuable component in the global disarmament and non-proliferation architecture, work with the Treaty's states parties on practical steps towards disarmament, and attend the meetings of states parties as an observer.

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