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14th Article XIV Conference calls for renewed action for CTBT entry into force

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Verification today, tomorrow, together: Highlights from SnT2025

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IDANT 2025: Leaders in Vienna, New York reaffirm support for nuclear test ban

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Building regional expertise in CTBT verification across East Asia

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Diving deep: CTBTO data helps discover new pygmy blue whale population

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Ending Nuclear Tests

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Cuba signs tsunami warning agreement with CTBTO

CTBTO Mourns Passing of Ambassador Wolfgang Hoffmann, First Executive Secretary

National Data Centres-for-All Initiative

CTBTO installs cutting-edge data system in Yemen, advancing regional capacity

Building Self-Sufficiency in On-site Inspection Operations

Schedule of sessions

Preparatory Commission

Sixty-Fifth Session Of The Preparatory…

10 Nov 2025 -12 Nov 2025

Training and Workshops

Regional Radionuclide Workshop And…

01 Dec -05 Dec 2025

Technical Training For Station Operators Of…

20 Oct -24 Oct 2025

Technical Training For Radionuclide Station…

27 Oct -31 Oct 2025

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CTBTO Fact Sheet

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Join CTBTO on our mission to create a world free of nuclear testing. Learn more about employment and business opportunities with the Provisional Technical Secretariat.

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