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News and events

Schedule of sessions

 25 Nov 2026 - 27 Nov 2026

Sixty-Seventh Session of the Preparatory Commission, Preparatory Commission

 19 Oct 2026 - 21 Oct 2026

Seventieth Session of Working Group A, Working Group A

 08 Sep 2026 - 11 Sep 2026

Sixty-Seventh Session of the Advisory Group, Advisory Group

Science and Technology Conferences [SnT]

To build and strengthen its relationship with the broader science community in support of the Comprehensive Nuclear-Test-Ban Treaty (CTBT), the Preparatory Commission for the Comprehensive Nuclear-Test-Ban Treaty Organization (CTBTO) invites the international scientific community to conferences on a regular basis.

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International Day Against Nuclear Tests

The International Day Against Nuclear Tests is marked annually on 29 August to remember the devastating consequences of nuclear tests and express support for the Comprehensive Nuclear-Test-Ban Treaty (CTBT) as a key pillar of the international non-proliferation and disarmament framework. 

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