Meet Our Experts

Steve Andreasen

National Security Consultant
Steve Andreasen is a national security consultant to the Nuclear Threat Initiative and its Nuclear Security Project. He teaches at the Hubert H. Humphrey School of Public Affairs, University of Minnesota.

Robert E. Berls, Jr., PhD

Senior Advisor on Russia and Eurasia
Robert E. Berls, Jr. has a deep background in Soviet/Russian energy and nuclear weapons issues. During the first Clinton Administration, he was special assistant for Russia/NIS Programs to the secretary of energy.

Andrew Bieniawski

Vice President, Material Security and Minimization
Andrew Bieniawski joined NTI after 24 years of service with the U.S. Department of Energy and the National Nuclear Security Administration.

Des Browne

Vice Chairman, NTI
Lord Browne is a Member of the House of Lords in the United Kingdom and a former British Secretary of State for Defense. He is also the Chair of the Board of Trustees and Directors of the European Leadership Network.

John Carlson

Based in Australia, John Carlson counsels NTI on international nuclear security, safeguards and verification issues.

Andrew Newman, PhD

Senior Program Officer, Material Security and Minimization
Andrew Newman joined NTI in 2011. Previously, Newman was a research associate with Harvard University's Project on Managing the Atom.

Sam Nunn

Co-Chairman and Chief Executive Officer, NTI
Former US Senator Nunn represented Georgia for 24 years (1972-1996), where he served as Chairman of the Senate Armed Services Committee and the Permanent Subcommittee on Investigations and on the Intelligence and Small Business Committees.

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.

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.

Deborah G. Rosenblum

Executive Vice President
Deborah G. Rosenblum became executive vice president of NTI in 2010, after serving as senior director, strategic planning and operations beginning in 2009. Prior to NTI, she spent seven years as vice president of The Cohen Group, an international consulting firm.

Dr. Page Stoutland, PhD

Vice President, Scientific and Technical Affairs
Page Stoutland joined NTI in 2010 from Lawrence Livermore National Laboratory (LLNL), where he held a number of senior positions.

Isabelle Williams

Senior Advisor, Global Nuclear Policy Program
Isabelle Williams came to NTI in 2007 from the Partnership for Global Security, where she managed the next generation nonproliferation program.