Estonia
Estonia boycotted the negotiations on the Treaty on the Prohibition of Nuclear Weapons (TPNW) in 2017 and has consistently voted against the annual UN General Assembly resolutions on the Treaty, including in 2025. It may sign and ratify or accede to the TPNW, but will have to make changes to its policies and practices to become compliant.
TPNW Status
| Key weapons of mass destruction treaties | ||
|---|---|---|
| NUCLEAR WEAPONS | ||
| Party to the TPNW | No | |
| Party to the NPT | Yes (Acceded 1992) | |
| Ratified the CTBT | Yes (Ratified 1999) | |
| Party to an NWFZ | No | |
| CSA with the IAEA | Yes (In force 1997) | |
| AP with the IAEA | Yes (In force 2005) | |
| BIOLOGICAL AND CHEMICAL WEAPONS | ||
| Party to the BWC | Yes (Acceded 1993) | |
| Party to the CWC | Yes (Ratified 1999) | |
| TPNW Art. 1(1) prohibitions: Compatibility in 2024 | ||
|---|---|---|
| (a) | Develop, produce, manufacture, acquire | Compatible |
| Possess or stockpile | Compatible | |
| Test | Compatible | |
| (b) | Transfer | Compatible |
| (c) | Receive transfer or control | Compatible |
| (d) | Use | Compatible |
| Threaten to use | Compatible | |
| (e) | Assist, encourage or induce | Non-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 (2025) |
| Participated in 2MSP (2023) | No |
| Participated in 1MSP (2022) | No |
| Average MSP delegation size (% women) | N/A |
| Adoption of TPNW (7 July 2017) | N/A |
| Participated in TPNW negotiations (2017) | No |
| Negotiation mandate (A/RES/71/258) | Voted yes |
| Fissile material | |
|---|---|
| Nuclear facilities | Yes |
| Fissile material production | No |
| HEU stocks | No |
| Plutonium stocks | No |
| SQP with the IAEA | No |
Latest developments
At the Treaty on the Non-Proliferation of Nuclear Weapons (NPT) Preparatory Committee meeting in April 2025, the three Baltic States—Estonia, Latvia, and Lithuania—argued in a joint statement that NATO’s ‘nuclear deterrence arrangements’ are ‘a necessity and a stabilizing factor in European and global security, particularly in the context of Russia’s dangerous and irresponsible behaviour and nuclear rhetoric’.1
In the First Committee of the UN General Assembly in October 2025, Estonia expressed its determination ‘to contribute to the global efforts to strengthen international law and multilateralism with the UN at its core, including through implementation of existing disarmament, arms control, and non-proliferation instruments’.2
Recommendations
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Estonia 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.
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Estonia should comply with its existing obligation under Article VI of the NPT and pursue negotiations in good faith on nuclear disarmament.
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Estonia 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.