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States Parties


Addressing the First Meeting of States Parties to the TPNW (1MSP) in Vienna in June 2022, Chile said: ‘This is, without a doubt, a historic event to advance our inalienable goal, which is to achieve a world free of nuclear weapons.’[1]

TPNW Status

20 Sep 2017
23 Sep 2021 (Ratification)
22 Dec 2021
Received 23 Sep 2021
TPNW Article 1(1) prohibitions: Compliance in 2022
(a) Develop, produce, manufacture, acquire Compliant
Test Compliant
Possess or stockpile Compliant
(b) Transfer Compliant
(c) Receive transfer or control Compliant
(d) Use Compliant
Threaten to use Compliant
(e) Assist, encourage or induce Compliant
(f) Seek or receive assistance Compliant
(g) Allow stationing, installation, deployment Compliant
TPNW voting and participation
UNGA resolution on TPNW (latest vote) Voted yes (2023)
Participated in 1MSP (2022) Yes
1MSP delegation size (% women) 4 (25%)
Adoption of TPNW (7 July 2017) Voted yes
Participated in TPNW negotiations (2017) Yes
Negotiation mandate (A/RES/71/258) Voted yes
Other weapons of mass destruction (WMD) treaties
Party to an NWFZ Yes (Ratified 1974, Tlatelolco)
Party to the NPT Yes (Acceded 1995)
Ratified the CTBT Yes (Ratified 2000, Annex 2 state)
Party to the BWC Yes (Ratified 1980)
Party to the CWC Yes (Ratified 1996)
IAEA safeguards and fissile material
Safeguards agreement Yes (5 Apr 1995)
TPNW Art 3(2) deadline N/A
Small Quantities Protocol No
Additional Protocol Yes
Enrichment facilities/reprocessing plants No
HEU stocks Cleared
Plutonium stocks No

Latest developments

The 1MSP appointed Chile as gender focal point to work during the intersessional period to support the implementation of the gender provisions of the Treaty and report on progress made to the Second Meeting of States Parties.2

At the Tenth Review Conference of the Treaty on the Non-Proliferation of Nuclear Weapons (NPT) in August 2022, Chile welcomed the TPNW’s entry into force and ‘very successful’ 1MSP, describing the Treaty as ‘an instrument that complements and strengthens the implementation and credibility of the NPT’. It called on all states to adhere to the TPNW.3 In a closing statement to the NPT Review Conference, Chile and 64 other TPNW supporters urged ‘all states committed to attain and maintain a world without nuclear weapons to join the TPNW without delay’.4

In the First Committee of the UN General Assembly in October 2022, Chile said that the TPNW ‘supports the system and the multilateral order’ in the fight against the possession of nuclear weapons, and reiterated its call for states that have not yet done so to sign and ratify the Treaty.5


  • Chile should continue to encourage other states to adhere to the Treaty.

  • Chile should ensure that all the TPNW obligations are implemented domestically, through legal, administrative, and other necessary measures.

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