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States Parties

New Zealand

New Zealand was one of the states that played a leading role in bringing about the diplomatic process towards a treaty prohibiting nuclear weapons and ensuring the ultimate success of the negotiations in 2017.

20 Sep 2017
31 Jul 2018 (Ratification)
22 Jan 2021
Received 18 Jan 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 83%
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 Yes
Ratified the CTBT Yes
Party to the NPT Yes
Party to a NWFZ Yes (Rarotonga)
Member of the CD Yes

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 Disarmament and Arms Control Minister of New Zealand, Phil Twyford, said: 'As we plan for [the TPNW's] First Meeting of States Parties, we encourage all countries to consider taking part, as parties, signatories, or observers. The TPNW coexists alongside the NPT, building on its vision for a nuclear-weapon-free world. Over time, it will strengthen the global norm against nuclear weapons.'1

In the First Committee of the 2021 UN General Assembly, New Zealand said that it: 'is proud to be a TPNW State Party – one of ten from the Pacific, a region free of nuclear weapons, but with nuclear legacy issues to be overcome.'2

New Zealand hosted a virtual conference on 7 December 2021 with Pacific island states to prepare for the First Meeting of States Parties to the TPNW and to promote universal adherence to the Treaty.3 It was also one of the co-sponsors of the 2021 UN General Assembly resolution on the TPNW, which called 'upon all States that have not yet done so to sign, ratify, accept, approve or accede to the Treaty at the earliest possible date'.4


  • New Zealand should continue to encourage other states to adhere to the TPNW.
  • New Zealand should ensure that all the TPNW obligations are implemented domestically, through legal, administrative, and other necessary measures.
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