The Honorable Daniel Poneman, Deputy Secretary, U.S. Dept. of Energy

The Honorable Sergey Ivanovich Kislyak, Ambassador of the Russian Federation to the United States

The Honorable Ellen Tauscher, Under Secretary, Arms Control and International Security, U.S. State Dept.

The Honorable Thomas D’Agostino, Under Secretary for Nuclear Security; Administrator, National Nuclear Security Administration; U.S. Dept. of Energy

The Honorable Steven E. Koonin, Under Secretary for Science, U.S. Dept. of Energy

Major General William Chambers, Assistant Chief of Staff, Strategic Deterrence and Nuclear Integration, U.S. Air Force

The Honorable Lindsey Graham, U.S. Senate (R, S.C.)

The Honorable Michael Turner, U.S. House of Representatives (R-Ohio), Chair, Armed Services Strategic Forces Subcommittee