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Laura Kiefer, director of administrative operations, joined NTI in 2013. Kiefer contributes to both administrative and development efforts at NTI, providing administrative direction and assistance to the chief development officer and chief financial officer.
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A founding NTI staff member, Joan Rohlfing became president and chief operating officer of the Nuclear Threat Initiative in January 2010, after nine years as NTI's senior vice president for programs and operations.
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Lynn Rusten has held senior positions in the White House, Department of State and Congress, bringing deep expertise in nuclear arms control, nonproliferation, and national security policy.
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Jill Hruby was NTI’s inaugural Sam Nunn Distinguished Fellow, completing her year-long term in November 2019. Before joining NTI, she served as the director of Sandia National Laboratories from July 2015 through May 2017. Sandia is a Department of Energy/National Nuclear Security Administration national laboratory with diverse national security missions that include nuclear weapons, cyberspace, energy, non-proliferation, biological defense, and space.
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Jaime Yassif, PhD serves a consultant to NTI, providing senior counsel to the NTI | bio team, having stepped down from her role as NTI | bio vice president at the end of 2025.
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Igor S. Ivanov is a Professor at Moscow State Institute for International Relations. Previously, he served as Minister of Foreign Affairs, from 1998 to 2004, and Secretary of the Security Council of the Russian Federation, from 2004 to 2007.
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