Nuclear-weapon-free state

Voted in favour of adopting TPNW

Has signed TPNW, but not yet ratified

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

Michel Temer, the then-president of Brazil, signed the treaty on 20 September 2017, describing it as “a historic moment”. The government announced in October 2018 that its “ratification process is under way”, with the treaty having been submitted to the congress for approval.

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

In a statement to the United Nations in September 2019, Brazil described the adoption of the treaty as “an evolutionary leap for the disarmament and non-proliferation regime”, which “has significantly raised the moral barrier against these weapons”.

It said in October 2019 that the “support enjoyed by the [treaty] is demonstrated, inter alia, by the rapid pace of signatures and ratifications”.

Brazil 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 its opening statement to the negotiating conference, Brazil described the conclusion of a treaty banning nuclear weapons as “a legal and moral duty of the international community” and “essential for the preservation of peace and our planet”.

Brazil, Austria, Ireland, Mexico, Nigeria, and South Africa comprised a “core group” of states that played a leading role in bringing the negotiations about and ensuring their ultimate success. 

In 2016, Brazil was a co-sponsor 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”.

Brazil 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.

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