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13th Article XIV Conference renews efforts for CTBT's entry into force

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Somalia signs CTBT, “testament to unwavering commitment to peace, security”

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CTBTO head pays tribute to Hiroshima and Nagasaki atomic bombing victims

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Nuclear Testing: `Oppenheimer` Shines Light on Manhattan Project Legacy

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Sri Lanka to host next on-site inspection integrated field exercise in 2025

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Our Mission

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Ending Nuclear Tests

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States Signatories

Article XIV Conferences

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Exploring nuclear test detection science with CTBTO at Research Festival

Sri Lanka ratifies CTBT, propelling South Asia towards full adherence to Treaty

UNIS and CTBTO screen Loneliest Whale film, hold panel discussion

Schedule of sessions

Working Group A

Sixty-Fourth Session

16 Oct 2023 -18 Oct 2023

Working Group A

Sixty-Fourth Session

16 Oct 2023 -18 Oct 2023

Preparatory Commission

Sixty-First Session

13 Nov 2023 -15 Nov 2023

Training and Workshops

Technical Training For Radionuclide Station…

17 Oct -20 Oct 2023

Ndc Capacity Building: Waveform Training…

16 Oct -20 Oct 2023

This Training Course Is Postponed Until…

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CTBTO Fact Sheet

International Monitoring System (IMS) Map

Verification Regime Brochure

Civil and Scientific Applications Brochure

On-Site Inspection Brochure

Work With Us

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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