Organized by the Arms Control Association in partnership with the Vienna Center for Disarmament and Non-Proliferation with financial support from the Government of the United Kingdom.

The Comprehensive Test Ban Treaty (CTBT) has already helped to bring an end to nuclear testing, reduced nuclear arms competition, and improved global capabilities to detect and deter nuclear testing in the future. But until the CTBT enters into force, the door to renewed testing is still open. Entry into force requires ratification by a handful of key states.

On the occasion of the 15th anniversary of the establishment of the Preparatory Commission for the CTBT Organization (CTBTO), ACA organized a high-level conference on the CTBT in Vienna, Austria involving senior government representatives and leading technical experts. The participants reviewed the progress of the CTBTO and the International Monitoring System, examined the role of the CTBT in advancing disarmament and curbing proliferation, and evaluated the obstacles and pathways to the Treaty’s entry into force. This conference report includes formal conference presentations and summarizes the discussions.

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