A ministerial-level conference is scheduled to open on 26 September to promote the entry into force of the Comprehensive Nuclear-Test-Ban Treaty (CTBT). This Treaty is designed to prohibit all nuclear weapon test explosions for all time.

Additional details about the event, more commonly known as the “Article XIV Conference”, can be found here.

Event Details
Time & Venue: Friday, 26 September 2025, 10:00 – 18:00 (EST)
Location: UN Headquarters, New York, Conference Room 4 (Conference Building)
Schedule: see agenda [PDF].

Media Opportunities:
Photo op at the opening of the conference.
The event will be streamed live on UN Web TV.
CTBTO image packages for download can be found here and on our Flickr page.
B-roll can be found here.
For interviews with CTBTO Executive Secretary Robert Floyd, please contact: [email protected]

Media Registration:
Media representatives wishing to cover the conference are requested to register with the CTBTO Public Information Section by sending an email to [email protected]. Media representatives who are not accredited to the United Nations in New York must apply for media accreditation here. Please note that media personnel will be limited to observing the conference from the designated booths or the mezzanine floor (accessible via the 1st floor entrance).

Background:
The Comprehensive Nuclear-Test-Ban Treaty (CTBT) bans all nuclear test explosions everywhere, by everyone, and for all time. Adherence to the Treaty is nearly universal, with 187 States Signatories and 178 ratifying States. However, to enter into force, the Treaty must be ratified by all 44 States listed in its Annex 2, for which nine ratifications are still required.
 
The CTBTO has established an International Monitoring System (IMS) to ensure that no nuclear explosion goes undetected. Currently, 307 certified facilities – of a total of 337 when complete – are operating around the world. The data collected by the IMS serves multiple purposes, including disaster mitigation, such as earthquake monitoring and tsunami warning. Additionally, it supports research in various fields, ranging from climate change studies to predicting monsoon rains to whale migration.

You can learn more about the Treaty and the Organization at www.ctbto.org and @CTBTO on Twitter, Facebook, and LinkedIn. 
 
For further information, please contact:
Mr Gunnar Vrang
Chief, Public Information Section
T: +43 1 26030 6375
M: +43 699 1459 6375
[email protected]

Inquiries in New York about the conference should be addressed to:
Mr Charles Abechi Oko
Senior Liaison Officer
CTBTO New York Office
Room L0339, DH Library Building
United Nations Headquarters
M: +1 551 384 4403
Email:  [email protected]