The Comprehensive Nuclear-Test-Ban Treaty Organization

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The Comprehensive Nuclear-Test-Ban Treaty Organization

We work to end nuclear test explosions worldwide. International Organization

02/06/2026

Support for the is nearly universal. With 187 signatures & 178 ratifications, the 🌍 determination to end nuclear test explosions is more powerful than ever. As the Treaty marks its 30th anniv. year, we stand together to reaffirm that commitment.
One Treaty. One Goal. Zero Tests.

https://ctbto.info/4fgfBc7

01/06/2026

📍Ulaanbaatar, Mongolia

Last week, 29 participants from 14 National Data Centres across South-East Asia, the Pacific, and the Far East wrapped up an intensive training on accessing and analysing International Monitoring System waveform data & International Data Centre products - growing the 🌎 network of experts keeping our verification system strong.

26/05/2026

In late April, 25 radionuclide and waveform operators from 22 countries came together in Vienna and TeST Centre in Seibersdorf for three days of training on the systems that keep station data authenticated and trusted across our global monitoring network 📡.

The majority were from G77 & Latin American and Caribbean States 🌍, reflecting how far the IMS reaches and the shared commitment to banning nuclear test explosions.

24/05/2026

On International Women’s Day for Peace & Disarmament, we celebrate the vital role of women in advancing global peace and security. At , we remain committed to amplifying women’s voices and leadership as we work together towards a world free of test explosions.

21/05/2026

📉 50+ experts. 28 countries. 3 days.

The HPC Workshop for Nuclear Test Explosion Monitoring wrapped up in Vienna earlier this month. In a hybrid format, participants worked with AI, deep learning & quantum algorithms - and came away with new ideas, new connections, and a shared commitment to a world 🌎 free of nuclear test explosions.

20/05/2026

At a Masterclass with BASIC’s senior Emerging Voices Network, Rob Floyd joined the of leaders for a dynamic conversation, bringing his own experience to the table while connecting with the fresh thinking in the room. The discussion reflected a shared commitment to ’s mission and the important role that young people can play in advancing a world free of nuclear test explosions.

18/05/2026

This Monday, Rob Floyd addressed the 69th session of Working Group A, the body that advises the Preparatory Commission on budgetary and administrative matters: "Your continued resolute commitment to the is both encouraging and inspiring."

18/05/2026

📣 The 5th cycle of the Mentoring Programme is officially underway and with 50 mentees from six geographical regions 🌍, it is our largest cohort yet! Together with their mentors, participants are starting a journey of learning, collaboration and professional growth, while deepening their understanding of the CTBTO’s mission to end nuclear test explosions. We look forward to their ideas and contributions as the continues to help shape a safer future. 🔗Learn more: https://ctbto.info/4tL834t

15/05/2026

From high-level diplomacy to student dialogue, Rob Floyd wrapped up a visit to Latvia, a valued partner. Highlights included a meeting with Deputy State Secretary Olga Bogdanova, accompanied by Ambassador Raimonds Oškalns of Permanent Mission of the Republic of 🇱🇻 to the UN, OSCE and other International Organisations in Vienna, and a tour of the National Data Centre. The Executive Secretary also exchanged with the at Rīgas Stradiņa universitāte (Riga Stradins University) and experts at Latvian Institute of International Affairs, all important advocates for a 🌍 free from nuclear test explosions.

Adresse

Vienna International Centre, Wagramerstrasse 5
Wien
1400

Webseite

https://ctbto.info/m/links

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