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States Parties


In 2021, Niue adopted The Prohibition of Nuclear Weapons Act, which is explicitly aimed at giving effect to the TPNW.[1] Niue thus became one of the first states parties that has adopted national legislation specifically to implement the TPNW, in accordance with the Treaty's Article 5.

TPNW Status

6 Aug 2020 (Accession)
22 Jan 2021
Received 17 Feb 2021
TPNW Article 1(1) prohibitions: Compliance in 2023
(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) N/A
Participated in 2MSP (2023) No
1MSP delegation size (% women) N/A
Adoption of TPNW (7 July 2017) N/A
Participated in TPNW negotiations (2017) N/A
Negotiation mandate (A/RES/71/258) N/A
Other weapons of mass destruction (WMD) treaties
Party to an NWFZ Yes (Ratified 1986, Rarotonga)
Party to the NPT Yes*
Ratified the CTBT Yes (Ratified 2014)
Party to the BWC Yes (Acceded 2018)
Party to the CWC Yes (Acceded 2005)
IAEA safeguards and fissile material
Safeguards agreement Yes (16 Apr 2002)*
TPNW Art 3(2) deadline N/A
Small Quantities Protocol Yes (Original)*
Additional Protocol No
Enrichment facilities/reprocessing plants No
HEU stocks No
Plutonium stocks No

Latest developments

Niue acceded to the TPNW on 6 August 2020, the 75th anniversary of the atomic bombing of Hiroshima. The Premier of Niue, Dalton Tagelagi, issued a national statement on the occasion that said: 'Niue is honoured to accede to the Treaty on the 2017 Prohibition of Nuclear Weapons and draw us closer to witnessing this very significant Treaty enter into force. ... [N]o state is immune to the threats and consequences of nuclear weapons. ... We recall the vision and values of our Pacific Leaders for a region of peace, harmony, security, social inclusion and prosperity so that all Pacific people can lead free, healthy and productive lives. As a global citizen we renew our pledge to ensuring the achievement of this vision and endeavour to uphold Niue's commitment to the international community in the enforcement and implementation of this treaty including the enactment of national legislation in Niue. ... We are hopeful that more States join us in this united commitment to enter this Treaty into force in the near future and eliminate nuclear weapons altogether.'2


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

* Through territorial application by New Zealand

1) Niue 2021 Prohibition of Nuclear Weapons Act, Act No. 353 of 2021.


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