Antigua and Barbuda

Nuclear-weapon-free state

Has signed the TPNW

Has ratified the TPNW

Antigua and Barbuda has signed and ratified the Treaty on the Prohibition of Nuclear Weapons.

E.P. Chet Greene, the minister for foreign affairs of Antigua and Barbuda, signed the treaty at a high-level ceremony on 26 September 2018. Walton Webson, the permanent representative of Antigua and Barbdua to the United Nations, deposited the country’s instrument of ratification with the UN secretary-general on 25 November 2019. 

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


Antigua and Barbuda has promoted universal adherence to the treaty, including by co-sponsoring a UN General Assembly resolution in 2019 that calls upon all states to sign, ratify, or accede to the treaty “at the earliest possible date”. 

In 2016, Antigua and Barbuda 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”.

Antigua and Barbuda 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.

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

E.P. Chet Greene, minister for foreign affairs of Antigua and Barbuda, signing the treaty at a high-level ceremony on 26 September 2018. Photo: ICAN | Darren Ornitz

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