San Marino
At the Third Meeting of States Parties (3MSP) to the Treaty on the Prohibition of Nuclear Weapons (TPNW) in March 2025, San Marino said that the Treaty ‘represents a substantial, inclusive and constructive platform for a renewed collective engagement towards our final goal’ of a world free of nuclear weapons. It also criticized the continued adherence of some States to the policy of nuclear deterrence: ‘In a world in which geopolitical tensions are rising, we don’t believe that the threat of inflicting mass destruction can be part of a security strategy.’1
TPNW Status
| Key weapons of mass destruction treaties | ||
|---|---|---|
| NUCLEAR WEAPONS | ||
| Party to the TPNW | Yes (Ratified 2018) | |
| Party to the NPT | Yes (Ratified 1970) | |
| Ratified the CTBT | Yes (Ratified 2002) | |
| Party to an NWFZ | No | |
| CSA with the IAEA | Yes (In force 1998) | |
| AP with the IAEA | No | |
| BIOLOGICAL AND CHEMICAL WEAPONS | ||
| Party to the BWC | Yes (Ratified 1975) | |
| Party to the CWC | Yes (Ratified 1999) | |
| TPNW Art. 1(1) prohibitions: Compliance in 2025 | ||
|---|---|---|
| (a) | Develop, produce, manufacture, acquire | Compliant |
| Possess or stockpile | Compliant | |
| Test | Compliant | |
| (b) | Transfer | Compliant |
| (c) | Receive transfer or control | Compliant |
| (d) | Use | Compliant |
| Threaten to use | Compliant | |
| (e) | Assist, encourage or induce | Compliant |
| (f) | Seek or receive assistance | Compliant |
| (g) | Allow stationing, installation, deployment | Compliant |
| TPNW voting and participation | |
|---|---|
| UNGA resolution on TPNW (latest vote) | Voted yes (2025) |
| Participated in 3MSP (2025) | Yes |
| Participated in 2MSP (2023) | Yes |
| Participated in 1MSP (2022) | Yes |
| Average MSP delegation size (% women) | 1.67 (83%) |
| Adoption of TPNW (7 July 2017) | Voted yes |
| Participated in TPNW negotiations (2017) | Yes |
| Negotiation mandate (A/RES/71/258) | Voted yes |
| Fissile material | |
|---|---|
| Nuclear facilities | No |
| Fissile material production | No |
| HEU stocks | No |
| Plutonium stocks | No |
| SQP with the IAEA | Yes (Revised) |
Latest developments
Speaking at a high-level event on 26 September 2025 to mark the International Day for the Total Elimination of Nuclear Weapons, the Minister of Foreign Affairs of San Marino, Luca Beccari, described the entry into force of the Treaty on the Prohibition of Nuclear Weapons (TPNW) in 2021 as ‘a historic milestone in the pursuit of international peace and security’.
‘This Treaty, which complements and strengthens the disarmament regime, is an important step in our path towards a nuclear-free world,’ he said. ‘San Marino promptly signed and ratified this Treaty, showing an unwavering support for a total ban of nuclear weapons. We urge all countries to accede to this important instrument.’2
In the First Committee of the UN General Assembly in October 2025, San Marino reiterated its call for all States to join the TPNW. ‘The Doomsday Clock warns 89 seconds to midnight—the closest it has ever been to global disaster. We need to change course,’ it said. ‘The only way to change this course is a collective recommitment to our multilateral instruments.’3
San Marino co-sponsored the 2025 UN General Assembly resolution on the TPNW, which welcomed the Treaty’s entry into force and called upon ‘all States that have not yet done so to sign, ratify, accept, approve, or accede to the Treaty at the earliest possible date’.4
Recommendations
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San Marino should continue to encourage other states to adhere to the TPNW.
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San Marino should ensure that all the TPNW obligations are implemented domestically, through legal, administrative, and other necessary measures.
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San Marino should conclude and bring into force an Additional Protocol (AP) with the International Atomic Energy Agency (IAEA).