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States Parties


Cambodia ratified the TPNW on 22 January 2021, the day that the Treaty as a whole entered into force. The National Assembly and Senate had unanimously approved the ratification in November 2020.

9 Jan 2019
22 Jan 2021 (Ratification)
22 Apr 2021
Received 12 May 2021
TPNW Article 1(1) prohibitions: Compliance in 2021
(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
2021 UNGA resolution on TPNW
2020 UNGA resolution on TPNW
2019 UNGA resolution on TPNW Voted yes
2018 UNGA resolution on TPNW Voted yes
Participated in TPNW negotiations Yes
Share of women in TPNW negotiations 25%
Vote on adoption of treaty text Voted yes
Adoption of TPNW (7 July 2017) Voted yes
IAEA safeguards and fissile material
Safeguards Agreement Yes
TPNW Art 3(2) deadline N/A
Small Quantities Protocol Yes (Modified)
Additional Protocol Yes
Fissile material production facilities No
Highly enriched uranium stocks No
Plutonium stocks (mil/civ) No/No
Related treaties and regimes
Party to the BWC Yes
Party to the CWC Yes
Party to the PTBT No
Ratified the CTBT Yes
Party to the NPT Yes
Party to a NWFZ Yes (Bangkok)
Member of the CD No

Latest developments

In a statement to the 2021 UN General Assembly's High-Level Plenary Meeting to Commemorate and Promote the International Day for the Total Elimination of Nuclear Weapons, the Minister Attached to the Prime Minister, Ouch Borith, said that Cambodia 'strongly support[s] the universalisation of this instrument to achieve the ultimate objective of a nuclear-weapons-free world and look[s] forward to the First Meeting of States Parties'.1 In the First Committee of the 2021 UN General Assembly, Cambodia again welcomed the TPNW's entry into force, adding: 'Through this first legally binding international agreement, we have made substantial progress toward our common objective of total elimination of nuclear weapons.' It said that Cambodia's ratification of the TPNW 'confirms the country's commitment to the nuclear disarmament endeavour'.2


  • 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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