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States Parties


Addressing the First Meeting of States Parties to the TPNW (1MSP) in Vienna in June 2022, Cambodia said that 'as long as all States do not join hand in hand with the TPNW, the world is still in danger. It called upon all states to sign, ratify, or accede to the TPNW 'at the earliest possible date.'[1]

TPNW Status

9 Jan 2019
22 Jan 2021 (Ratification)
22 Apr 2021
Received 12 May 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) 3 (0%)
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 1997, Bangkok)
Party to the NPT Yes (Acceded 1972)
Ratified the CTBT Yes (Ratified 2000)
Party to the BWC Yes (Ratified 1983)
Party to the CWC Yes (Ratified 2005)
IAEA safeguards and fissile material
Safeguards agreement Yes (17 Dec 1999)
TPNW Art 3(2) deadline N/A
Small Quantities Protocol Yes (Modified)
Additional Protocol Yes
Enrichment facilities/reprocessing plants No
HEU stocks No
Plutonium stocks No

Latest developments

In the First Committee of the UN General Assembly in October 2022, Cambodia said that the ‘successful conclusion’ of the 1MSP, with the adoption by consensus of a declaration and action plan, 'should accelerate progress towards the goal of totally eliminating nuclear weapons from the world'.2

In a closing statement to the Tenth Review Conference of the Treaty on the Non-Proliferation of Nuclear Weapons (NPT) in August 2022, Cambodia and 64 other TPNW supporters urged ‘all states committed to attain and maintain a world without nuclear weapons to join the TPNW without delay’.3


  • Cambodia should continue to encourage other states to adhere to the TPNW.

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

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