The IPNDV, through a unique public-private partnership between the U.S. Department of State and the Nuclear Threat Initiative, brings together more than 25 countries, including nuclear and non-nuclear weapon states.

Representatives from the following have attended various activities of the partnership: Argentina, Canada, France, Indonesia, Kazakhstan, Norway, Romania, United Arab Emirates, Australia, Chile, Germany, Italy, Mexico, Philippines, Sweden, United Kingdom, Belgium, European Union, Holy See, Japan, The Netherlands, Poland, Switzerland, United States of America, Brazil, Finland, Hungary, Jordan, Nigeria, Republic of Korea, and Turkey.

U.S. Department of State
The U.S. Department of State’s Arms Control, Verification and Compliance (AVC) Bureau leads efforts to assess the adequacy of monitoring and verification resources, in prospective and existing nuclear arms control and disarmament agreements and commitments, as well as promotes the identification, development, and implementation of verification technologies.

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Nuclear Threat Initiative (NTI)
NTI is a nonprofit and nongovernmental organization that works to prevent catastrophic attacks with weapons of mass destruction and disruption (WMDD)—nuclear, biological, radiological, chemical, and cyber.

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*Participated as observers