Action 12 - NPT Monitor

China

What has the NWS done so far (prior to the current Review Cycle)?

What is the NWS doing on this action in the current Review Cycle?

Sources

France

What has the NWS done so far (prior to the current Review Cycle)?

France has participated to all the conferences on facilitating the entry into force of the CTBT organised from 2003 to 2022 and presented in each its measures taken to promote the entry into force of the Treaty, including working papers, side-events and support to the International Monitoring System (IMS).

It reported to the 2011 Conference the work done to promote entry into force as co-president of the Conference with Morocco. During this co-chairmanship, five new states ratified the CTBT.

What is the NWS doing on this action in the current Review Cycle?

France has participated to the conferences on facilitating the entry into force of the CTBT organised in 2023 and 2025 and presented in each its measures taken to promote the entry into force of the Treaty, including working papers, side-events and support to the International Monitoring System (IMS).

Sources

CTBTO. Activities Undertaken by Signatory and Ratifying States Under Measure (L) of the Final Declaration of the 2025 Conference on Facilitating the Entry into Force of the Treaty in the Period June 2023 – May 2025. CTBT-Art.XIV/2025/4. May 2025. https://www.ctbto.org/sites/default/files/2025-09/CTBT-Art.XIV-2025-4.pdf

CTBTO. Présentation du rapport des coprésidences française et marocaine [Presentation of the report by the French and Moroccan co-chairs] (2009 -2011). 23 September 2011. https://www.ctbto.org/sites/default/files/2022-07/france_fr_2011.pdf

Russia

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What has the NWS done so far (prior to the current Review Cycle)?

Russia participated in all Conferences on Facilitating the Entry into Force of the CTBT held prior to the current Review Cycle and reported on measures taken to promote the Treaty’s entry into force.

What is the NWS doing on this action in the current Review Cycle?

Russia participated in the 13th Conference on Facilitating the Entry into Force of the CTBT in 2023 and reported on measures taken to promote the Treaty’s entry into force.

Russia did not participate in the 14th Conference on Facilitating Entry into Force of the CTBT in 2025 citing disagreements over certain elements of the draft text of the final declaration. However, Russia submitted a report on measures taken to promote the Treaty’s entry into force.

Sources

Conference on Facilitating the Entry into Force of the Comprehensive Nuclear-Test-Ban Treaty. “Activities undertaken by Signatory and Ratifying States under Measure (L) of the Final Declaration of the 2019 Conference on Facilitating the Entry into Force of the Treaty in the period June 2023 – May 2025”, 26 September 2025

https://www.ctbto.org/sites/default/files/2025-10/CTBT-Art.XIV-2025-4.pdf

Ministry of Foreign Affairs of the Russian Federation. Foreign Ministry statement on the reasons for Russia’s refusal to participate in the 14th Conference on Facilitating Entry into Force of the Comprehensive Nuclear-Test-Ban Treaty (CTBT), 27 September 2025

https://mid.ru/en/foreign_policy/news/2049467/

Mikhail Ulyanov. Statement by Permanent Representative of the Russian Federation to the International Organizations in Vienna at the 65th session of the CTBTO Preparatory Commission, 10 November 2025.

https://viennamission.mid.ru/en/news/statement_by_permanent_representative_of_the_russian_federation_to_the_international_organizations_i_101125/

United Kingdom

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What has the NWS done so far (prior to the current Review Cycle)?

The UK attended and actively participated in all Article XIV Conferences on Facilitating the Entry into Force of the CTBT throughout the prior cycle. At the 2021 Article XIV Conference, Minister Cleverly delivered the UK statement, congratulated the incoming CTBTO Executive Secretary, and called on states yet to pay their assessed contributions to do so.

What is the NWS doing on this action in the current Review Cycle?

The UK states that it fully supports the CTBT Article XIV Conferences on Facilitating the Entry-into-Force of the CTBT and that it has attended all of the Conferences and shall continue to do so until the Treaty enters into force.

Sources

Foreign, Commonwealth and Development Office (2021). Comprehensive Nuclear Test Ban Treaty: Minister Cleverly's speech to the Article XIV Conference. 24 September. https://www.gov.uk/government/speeches/comprehensive-nuclear-test-ban-treaty-minister-cleverlys-speech-to-the-article-xiv-conference

Foreign, Commonwealth and Development Office (2026). National report of the United Kingdom of Great Britain and Northern Ireland pursuant to actions 5, 20 and 21 of the action plan of the 2010 Review Conference of the Parties to the Treaty on the Non-Proliferation of Nuclear Weapons for the eleventh Review Conference of the Parties to the Treaty. <https://assets.publishing.service.gov.uk/media/69df600a53469bbcdf408e8b/UK-National-Report-11th-Treaty-on-the-Non-Proliferation-of-Nuclear-Weapons-NPT-Review-Conference.pdf>

United States

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What has the NWS done so far (prior to the current Review Cycle)?

The United States continued to abide by its nuclear testing moratorium following President Clinton’s signature of the 1996 Comprehensive Nuclear-Test-Ban Treaty (CTBT); however, in 1999 the U.S. Senate did not provide its advice and consent for ratification. The successful arguments against the treaty largely centred around a perceived lack of confidence in the continued safety and reliability of the U.S. nuclear stockpile without the ability to conduct explosive tests. As a result of the non-ratification of the United States, among others, the CTBT did not enter into force during this period.

What is the NWS doing on this action in the current Review Cycle?

The United States has not ratified the Comprehensive Nuclear-Test-Ban Treaty.

Sources

United States Senate. “Roll Call Vote 106th Congress – 1st Session.” 13 October 1999. https://www.senate.gov/legislative/LIS/roll_call_votes/vote1061/vote_106_1_00325.htm.

United States Senate. “Privilege Of The Floor (Executive Session);” Congressional Record Vol. 145, No. 136. 8 October 1999. https://www.congress.gov/congressional-record/volume-145/issue-136/senate-section/article/S12264-1.