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States Parties


Timor-Leste ratified the TPNW on 20 June 2022, on the eve of the Treaty's First Meeting of States Parties.

26 Sep 2018
20 Jun 2022 (Ratification)
18 Sep 2022
Deadline 18 Oct 2022 (Passed)
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 100%
Vote on adoption of treaty text Voted yes
Adoption of TPNW (7 July 2017) Voted yes
IAEA safeguards and fissile material
Safeguards Agreement No (Signed 2009)
TPNW Art 3(2) deadline 18 Mar 2024
Small Quantities Protocol No (Signed 2009)
Additional Protocol No (Signed 2009)
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 No
Member of the CD No

Latest developments

In First Committee of the 2021 UN General Assembly, Timor-Leste described the TPNW as 'an important international humanitarian norm for our common security, protection of human life, and peace in the world', and hailed its entry into force as 'an extraordinary achievement and a step towards the eventual elimination of nuclear weapons'.1


  • Timor-Leste should urgently ratify the TPNW.
  • Timor-Leste should ensure that all the TPNW obligations are implemented domestically, through legal, administrative, and other necessary measures.
  • Timor-Leste should bring into force its Comprehensive Safeguards Agreement and Additional Protocol with the IAEA.
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