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United States of America United States of America

United States of America

Nuclear-armed states

The United States boycotted the TPNW negotiations and has not adhered to the Treaty. It is a nuclear-armed state and not in compliance with all of the prohibitions in Article 1. The United States may sign and ratify the TPNW, but will have to make changes to its policies and practices to become compliant.

Latest developments and background

In a 2017 statement about the TPNW, the United states declared that it “will not support the treaty”. Nuclear disarmament “will require a transformation of the international security environment.” ( In August 2018, the California Senate approved resolutions urging the United States to embrace the TPNW and restrict the US president’s unchecked authority to launch a first nuclear strike. The states of Oregon and New Jersey have also approved legislation supporting the TPNW. Washington D.C., Los Angeles, and seven other U.S. cities have committed to ICAN’s Cities Appeal.


  • The United States should acknowledge that nuclear deterrence is not a sustainable solution for its own or international security, and that any perceived benefits are far outweighed by the risk of nuclear accidents or war. It should move rapidly to reduce and eliminate its nuclear arsenal.
  • The United States should urgently sign and ratify the TPNW, and encourage other states to adhere to the Treaty. Until it is in a position to do so, it should - in line with its unequivocal undertaking under the NPT to accomplish the total elimination of its nuclear arsenals - welcome the TPNW as a valuable contribution towards the common aspiration of a world without nuclear weapons, attend its meetings of states parties as an observer, and work with its states parties on practical steps towards disarmament.
Compliance with article 1(1) of the TPNW
Art 1(1)(a) The prohibition on developing, producing, manufacturing, or otherwise acquiring Not compliant
The prohibition on testing Compliant
The prohibition on possessing or stockpiling Not compliant
Art 1(1)(b) The prohibition on transferring Not compliant
Art 1(1)(c) The prohibition on receiving transfer or control Compliant
Art 1(1)(d) The prohibition on using Compliant
The prohibition on threatening to use Not compliant
Art 1(1)(e) The prohibition on assisting prohibited activities Not compliant
The prohibition on encouraging or inducing prohibited activities Not compliant
Art 1(1)(f) The prohibition on encouraging or inducing prohibited activities Not compliant
Art 1(1)(g) The prohibition on allowing stationing, installation, or deployment Compliant
TPNW process
Vote on mandate resolution (A/RES/71/258) Voted no
Participated in treaty negotiations (% women) No (N/A)
Vote on adoption of treaty text N/A
Vote on UNGA resolution 2018 Voted no
Fissile material
Highly enriched uranium stocks 574.5 t (~38,300 weapon equivalents)
Civilian plutonium stocks
Fissile material production Yes (LEU and Pu)
Related treaties and mechanisms
Party to the NPT Yes
Party to a NWFZ No
Ratified the CTBT No (Signed, Annex 2 state)
Party to the PTBT Yes
Member of the CD Yes
IAEA CSA in force No (Voluntary offer agreement)
IAEA AP in force Yes (Modified)
Party to the CWC Yes
Party to the BWC Yes
United states of america