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States Parties


Ireland 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
6 Aug 2020 (Ratification)
22 Jan 2021
Received 22 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 50%
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 No
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 No
Member of the CD Yes

Latest developments

In the First Committee of the 2021 UN General Assembly, Ireland said: 'A vision of a more peaceful world, underpinned by the political will to achieve it, led Ireland and a large majority of States to adopt the Treaty on the Prohibition of Nuclear Weapons (TPNW) in 2017. Ireland is proud of its role in the negotiation of the Treaty, which entered into force in January this year. We look forward to the First Meeting of States Parties, which will take place in Vienna in March next year, where States Parties will set out concrete plans for the full implementation of the Treaty’s humanitarian-centred objectives. The Treaty has already re-energised debate on nuclear disarmament, and for many States acts as a practical expression of their commitment to implement Article VI of the NPT. The Meeting of States Parties is open to all states to attend as observers and Ireland reiterates that states not party to the Treaty are most welcome to join as observers in Vienna; we encourage all shades of opinion to participate and engage in constructive discussion.'1

Ireland was 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'.2


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