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United States of America

Nuclear-armed state (5,800 nuclear warheads)

The United States boycotted the TPNW negotiations in 2017 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.

TPNW status
Not signed, not ratified, not acceded
Compatibility with prohibitions in TPNW Article 1(1)
Art 1(1)(a) Develop, produce, manufacture, acquire Not compatible
Test Compatible
Possess or stockpile Not compatible
Art 1(1)(b) Transfer Not compatible
Art 1(1)(c) Receive transfer or control Compatible
Art 1(1)(d) Use Compatible
Threaten to use Compatible
Art 1(1)(e) Assist, encourage or induce Not compatible
Art 1(1)(f) Seek or receive assistance Not compatible
Art 1(1)(g) Allow stationing, installation, deployment Compatible
TPNW voting and participation
Vote on negotiation mandate (A/RES/71/258) Voted no
Participated in treaty negotiations (% women) No (N/A)
Vote on adoption of treaty text N/A
Last vote on UNGA resolution Voted no
Fissile material
Fissile material production facilities Yes
Highly enriched uranium stocks 565,000 kg
Plutonium stocks (military/civilian) 79,700 kg/8,000 kg
Related treaties and regimes
Party to the NPT Yes
Party to a NWFZ No (1 of 5 NSA protocols)
Ratified the CTBT No (Signed, Annex 2 state)
Party to the PTBT Yes
Member of the CD Yes
IAEA CSA in force Voluntary offer agreement
IAEA AP in force Partial
Party to the CWC Yes
Party to the BWC Yes

Latest developments

The United States voted against the UN General Assembly resolutions on the TPNW in 2018, 2019, and 2020. In October 2020, the United States called on states that had ratified the TPNW to withdraw from the Treaty. The government's opposition to the TPNW is unlikely to change with the transition from the Trump administration to the Biden administration in January 2021, though it is expected that the US will rejoin and renew previous arms control agreements and consider limits on nuclear weapons use and the development of new weapons. Support, primarily through the Back from the Brink campaign, for the ICAN Cities Appeal continues to build in the US, numbering 36 cities and towns and three state governments in December 2020. Opinion varies considerably from region to region in the US, but 49% of Americans now support nuclear weapons abolition. New York City continues to consider divesting from nuclear weapons makers, which, if successful, would be the largest city in the world to do so. See:,


  • 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 welcome the TPNW as a valuable contribution to the global disarmament and non-proliferation architecture, attend its meetings of states parties as an observer, and work with its states parties on practical steps towards disarmament.
  • The United States should implement in good faith its obligations under Article VI of the NPT. The United States should conclude and bring into force a full Comprehensive Safeguards Agreement (CSA) and Additional Protocol (AP) with the IAEA. It should extend New START, rejoin Open Skies Treaty, and return to compliance with the JCPOA. The United States should also ratify the CTBT.
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