Question of the day

Can any State request International Monitoring System (IMS) data on any other State?

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Current Treaty Status
Member States182
Total Ratifications153
Annex Ratifications35
Latest State SignatoryTrinidad & Tobago
Latest Ratifying StateCentral African Republic
"1945-1998"

by Isao HASHIMOTO
A multimedia artist's take on worldwide nuclear testing from 1945-1998.

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Press Releases and Media Advisories

27 July 2010

EU Council decision - EUR 5 million contribution to strengthen CTBTO verification readinessmore

29 May 2010

CTBTO Executive Secretary Tibor Toth welcomes the adoption of a final document at the 2010 NPT Review Conferencemore

26 May 2010

MEDIA ADVISORY - New CTBTO test facility to be opened 2 June 2010, at Conrad Observatory, near Viennamore

Archive

Highlights

28 July 2010

Listening for Nuclear Noise - watch the latest CTBTO video clip on it’s YouTube channel.more

09 July 2010

International Commission on Nuclear Non-Proliferation and Disarmament (ICNND) Press Conference on July 5th, 2010.more

01 July 2010

Special Delegation of Indonesian Parliamentarians visits CTBTO as part of process to ratify CTBT.more

17 June 2010

A new CTBTO test bed to further refine infrasound technology had its official opening 2 June, 2010.more

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CTBT in the News

Potential Vote Set For "New START" (GSN)

Former Nuclear Commanders Support New START (ACA)

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Article XIV Conferences

Find all the documents of the latest conference here.