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News

 23 Sep 2022
São Tomé and Príncipe becomes 176TH country to ratify CTBT
EQUATORIAL GUINEA RATIFIES CTBT
 21 Sep 2022
Equatorial Guinea ratifies CTBT, building momentum towards global adherence to Treaty
 13 Sep 2022
CTBTO Head applauds South America for carrying torch of leadership in nuclear non-proliferation and disarmament
CTBTO Executive Secretary Robert Floyd delivers statement at NPT Review Conference
 15 Aug 2022
CTBTO Head hails Treaty "A Success Story" at NPT Review Conference
Ratification ceremony attended by Karlito Nunes, Permanent Representative of Timor-Leste to the UN, and Andrei Kolomoets, Acting Chief, Treaty Section of the UN Office of Legal Affairs
 1 Aug 2022
Timor-Leste ratifies CTBT, universalising Treaty in South-East Asia
Flag of Dominica
 1 Jul 2022
Dominica ratifies CTBT, universalising Treaty in Latin America and the Caribbean
CTBTO Executive Secretary Floyd meets Mayor of Nagasaki, Tomihisa Taue and Mayor of Hiroshima, Kazumi Matsui
 23 Jun 2022
Hiroshima, Nagasaki mayors say CTBT is indispensable for Nuclear-Weapons-Free world
Tsunami warning agreement signature ceremony, 13 June 2022, CTBTO, Vienna International Centre
 23 Jun 2022
Spain signs tsunami warning agreement with CTBTO

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Our Mission

  • Ending Nuclear Tests
  • The Treaty
  • The Organization
  • States Signatories
  • Article XIV Conferences
  • Ministerial Meetings

Our Work

  • Verification Regime
  • International Monitoring System
  • IMS Map
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  • Detecting Nuclear Tests
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