Colombia
On 16 June 2025, the Colombian Congress approved a bill to ratify the Treaty on the Prohibition of Nuclear Weapons (TPNW).1 The final step in the domestic ratification process is a review by the Constitutional Court, which is under way. Once completed, Colombia will need to deposit its instrument of ratification with the UN Secretary-General to become a State Party.
TPNW Status
| Key weapons of mass destruction treaties | ||
|---|---|---|
| NUCLEAR WEAPONS | ||
| Party to the TPNW | No (Signed 2018) | |
| Party to the NPT | Yes (Ratified 1986) | |
| Ratified the CTBT | Yes (Ratified 2008, Annex 2 state) | |
| Party to an NWFZ | Yes (Ratified 1972, Tlatelolco) | |
| CSA with the IAEA | Yes (In force 1982) | |
| AP with the IAEA | Yes (In force 2009) | |
| BIOLOGICAL AND CHEMICAL WEAPONS | ||
| Party to the BWC | Yes (Ratified 1983) | |
| Party to the CWC | Yes (Ratified 2000) | |
| 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) | No |
| Participated in 2MSP (2023) | No |
| Participated in 1MSP (2022) | No |
| Average MSP delegation size (% women) | N/A |
| 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 | Yes |
| Fissile material production | No |
| HEU stocks | Cleared |
| Plutonium stocks | No |
| SQP with the IAEA | No |
Latest developments
In June 2025, the Ministry of Foreign Affairs of Colombia said that the congressional decision to approve ratification of the Treaty on the Prohibition of Nuclear Weapons (TPNW) advanced Colombia’s ‘commitment to global peace, progressive disarmament, and human security’, in line with its ‘diplomatic tradition of making the peaceful resolution of conflicts and respect for international law fundamental pillars of its foreign policy’. ‘With this decision, the government reiterates its conviction that true security is not built through threats, but through cooperation, justice, and human dignity,’ it said.2
At the Treaty on the Non-Proliferation of Nuclear Weapons (NPT) Preparatory Committee meeting in April 2025, Colombia warned against the further weakening of the Treaty in the current multilateral landscape. It called for urgent action to eradicate nuclear weapons, describing this as ‘an issue of life and death, and of the very survival of our species’.3
In the First Committee of the UN General Assembly in October 2025, Colombia noted that its commitment to nuclear non-proliferation and disarmament is enshrined in its Constitution, which explicitly prohibits nuclear weapons. It announced that it is currently in the process of ratifying the TPNW and is already a State Party to all other major international instruments on disarmament and non-proliferation.4
Recommendations
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Colombia should urgently ratify the TPNW.