Strengthening the Comprehensive Nuclear-Test-Ban Treaty and its Verification Regime

February 3, 2021

The Vienna Center for Disarmament and Non-Proliferation (VCDNP) held a high-level virtual event in cooperation with the CTBT Art. XIV Process Co-Chairs Algeria and Germany as well as the Provisional Technical Secretariat of the CTBTO.

The event included two panel discussions and highlighted the importance of the CTBT to national and international security as well as the non-proliferation regime and linkages between the Treaty on the Non-Proliferation of Nuclear Weapons and the CTBT. Panelists discussed the benefits states gain from the Comprehensive Nuclear-Test Ban Treaty Organization’s (CTBTO) current activities in establishing and provisionally operating the Treaty’s verification regime, specifically highlighting related capacity building. Panelists also discussed existing challenges to the CTBT’s entry into force and how to overcome these obstacles. Recent developments and challenges in the establishment of the verification regime under the Treaty were examined.

Opening Remarks

Held on January 28, 2021 via Zoom


  • Elena Sokova, Executive Director, VCDNP
  • Dr. Lassina Zerbo
    Executive Secretary, Comprehensive Nuclear-Test-Ban Treaty Organization (CTBTO)
  • Ambassador Faouzia Mebarki, People’s Democratic Republic of Algeria
  • Ambassador Gerhard Küntzle, Federal Republic of Germany

The CTBT: Cold War Relic or the Future of Disarmament and Non-Proliferation?

Moderator: Elena Sokova, Executive Director, VCDNP


  • Ambassador Gustavo Zlauvinen
    President-Designate of the 10th NPT Review Conference
  • Thomas Countryman
    Former US Assistant Secretary of State for International Security and Nonproliferation, Chair of the Arms Control Association Board of Directors
  • Ambassador Mikhail Ulyanov, Russian Federation
  • Angela Kane, CTBTO Group of Eminent Persons, VCDNP Senior Fellow
  • Yeseul Woo, CTBTO Youth Group
  • Sylvia Mishra, CTBTO Youth Group

Challenges and Opportunities of the Establishment of the Verification Regime and its Relation to the Entry into Force

Moderator: Elena Sokova, Executive Director, VCDNP


  • Dr. Mohammad Hassan Daryaei, Special Assistant to the Executive Secretary, CTBTO
  • Dr. Anissa Hammadi, Expert and Operations Officer of the Algiers National Data Centre
  • Dr. Lars Ceranna, Head of the German National Data Centre
  • Ambassador Gloria Navarette Pinto, Republic of Chile
  • Ambassador Stephan Klement, European Union
  • Daryl Kimball, Executive Director, Arms Control Association


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