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Isabelle Williams joined NTI in 2007 and serves as senior director on the Global Nuclear Policy Program. As part of this work she helps coordinate the international strategy of the program, managing the work of NTI’s global partners.
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Jack Brosnan joined NTI in August 2019 as a program officer for the Materials Risk Management program. In this role he supports the Nuclear Security Index, and Gender Champions in Nuclear Policy.
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Jacob Eckles joined the Nuclear Threat Initiative in 2019 and serves as a Senior Program Officer for NTI | bio.
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Jessica A. Bell serves as a senior director for NTI | bio. In this role, she works on projects to strengthen global health security, primarily NTI’s Global Health Security Index.
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Greg Butchello joined the Nuclear Threat Initiative in 2020 as the executive assistant and conference coordinator for both Global Biological Policy & Programs and International Fuel Cycle Strategies.
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Ioanna Iliopulos joined NTI as a senior consultant in February 2015 to support NTI’s Radiological Security Program. Iliopulos has more than 20 years of experience addressing issues and programs relating to National Security and Nonproliferation policy.
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Ambassador Hamad Alkaabi is the Permanent Representative of the United Arab Emirates to the International Atomic Energy Agency and Special Representative for International Nuclear Cooperation.
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Hayley Anne Severance is the deputy vice president for NTI's Global Biological Policy and Programs team (NTI | bio). In that role, she supports and leads the team's efforts to reduce biological risks that imperil humanity.
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General Habiger has more than 35 years of experience in national security and nuclear operations. In his role as commander in chief of the U.S. Strategic Command, General Habiger was responsible for all U.S. Air Force and U.S. Navy strategic nuclear forces.
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