Colombia

Nuclear-weapon-free state

Voted in favour of adopting TPNW

Has signed TPNW, but not yet ratified

Colombia has signed but not yet ratified the Treaty on the Prohibition of Nuclear Weapons.

Francisco González, the then-deputy permanent representative of Colombia to the United Nations, signed the treaty on 3 August 2018. 

Colombia participated in the negotiation of the treaty at the United Nations in New York in 2017 and voted in favour of its adoption.


Colombia voted in favour of a UN General Assembly resolution in 2019 that welcomed the adoption of the treaty 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”.

In a working paper submitted to the negotiating conference, Colombia set out suggested principles, objectives, and preambular elements for the treaty.

In 2016, Colombia voted in favour of the UN General Assembly resolution that established the formal mandate for states to commence the negotiations in 2017 on “a legally binding instrument to prohibit nuclear weapons, leading towards their total elimination”.

Colombia was among 127 states that endorsed a “humanitarian pledge” in 2015–16 to cooperate “in efforts to stigmatise, prohibit, and eliminate nuclear weapons”. The pledge was instrumental in building momentum and support for convening the negotiations.

Colombia is a state party to the 1967 Treaty of Tlatelolco, which established Latin America and the Caribbean as a nuclear-weapon-free zone.


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  • Columbian Campaign to Ban Landmines 

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