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NTI experts can comment on issues and news related to nuclear weapons, nuclear materials, biological threats and other international security and nonproliferation issues. NTI also benefits from the expertise of our international board of directors.

Joan Rohlfing

President and Chief Operating Officer, NTI

A founding NTI staff member, Joan Rohlfing became president of NTI in January 2010, after nine years as NTI's senior vice president for programs and operations. Before joining NTI, she held senior positions with the U.S. Department of Energy, as senior advisor for national security to the Secretary of Energy and as director of the Office of Nonproliferation and National Security.

Andrew Bieniawski

Vice President, Material Security and Minimization

Andrew Bieniawski joined NTI after 25 years of service with the U.S. Department of Energy and the National Nuclear Security Administration.

Samantha Pitts-Kiefer

Senior Program Officer & Director, Global Nuclear Policy Program

Samantha Pitts-Kiefer joined NTI in June 2012 and serves as Director of the Global Nuclear Policy Program.