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States parties

Holy See

The Holy See is an example to be followed by other states, as it has adhered to all of the seven key treaties in the legal architecture on disarmament and non-proliferation of weapons of mass destruction.

TPNW Status

SIGNATURE
20 Sep 2017
DEPOSIT WITH UNSG
20 Sep 2017 (Ratification)
ENTRY INTO FORCE
22 Jan 2021
DECLARATION
Received 15 Feb 2021
Key weapons of mass destruction treaties
NUCLEAR WEAPONS
Party to the TPNW Yes (Ratified 2017)
Party to the NPT Yes (Acceded 1971)
Ratified the CTBT Yes (Ratified 2001)
Party to an NWFZ No
CSA with the IAEA Yes (In force 1972)
AP with the IAEA Yes (In force 1998)
BIOLOGICAL AND CHEMICAL WEAPONS
Party to the BWC Yes (Acceded 2002)
Party to the CWC Yes (Ratified 1999)
TPNW Art. 1(1) prohibitions: Compliance in 2024
(a) Develop, produce, manufacture, acquire Compliant
Possess or stockpile Compliant
Test 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) Yes
Participated in 1MSP (2022) Yes
Average MSP delegation size (% women) 6.5 (16.5%)
Adoption of TPNW (7 July 2017) Voted yes
Participated in TPNW negotiations (2017) Yes
Negotiation mandate (A/RES/71/258) N/A
Fissile material
Nuclear facilities No
Fissile material production No
HEU stocks No
Plutonium stocks No
SQP with the IAEA Yes (Modified)

Latest developments

At a high-level UN event to commemorate the International Day for the Total Elimination of Nuclear Weapons on 26 September 2024, the Cardinal Secretary of State of the Holy See, Pietro Parolin, called upon all states to accede to the Treaty on the Prohibition of Nuclear Weapons (TPNW) and quoted Pope Francis’s statement to the First Meeting of States Parties (1MSP) to the TPNW in 2022: ‘In a system of collective security, there is no place for nuclear weapons and other weapons of mass destruction.’1

In an address to members of the diplomatic corps accredited to the Holy See in January 2024, Pope Francis reaffirmed ‘the immorality of manufacturing and possessing nuclear weapons’.2

At the Treaty on the Non-Proliferation of Nuclear Weapons (NPT) Preparatory Committee session in July 2024, the Holy See encouraged ‘further exploration of how the NPT and the [TPNW] can be mutually reinforcing, including in the areas of nuclear disarmament verification, environmental rehabilitation and assistance to victims’.3

In the First Committee of the UN General Assembly in October 2024, the Holy See said that the TPNW ‘offers a viable path to establish a new security framework based on human dignity and the principle of sovereign equality among States’. ‘By addressing the profound humanitarian and environmental consequences of nuclear weapons, the TPNW provides a comprehensive response to the urgent need for a world free of nuclear weapons,’ it added.4 It also described the TPNW as ‘a beacon of hope and progress’ and urged all states to join the Treaty ‘and renounce the use of nuclear energy for warfare’. Moreover, it expressed hope that the Third Meeting of States Parties to the TPNW in March 2025 would ‘take meaningful steps towards laying a foundation for measures to verify the elimination of nuclear weapons’, and it encouraged ‘the broad participation’ in the meeting of states that are not yet parties to the Treaty.5

Recommendations

  • The Holy See should continue to encourage other states to adhere to the TPNW.

  • The Holy See should ensure that all the TPNW obligations are implemented domestically, through legal, administrative, and other necessary measures.

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