Ambassador Robert Joseph is senior scholar at the National Institute for Public Policy and serves on the Board of Advisors of the Nonproliferation Program at the Foundation for Defense of Democracies. In the George W. Bush administration, he was undersecretary of state for Arms Control and International Security and later U.S. special envoy for Nuclear Nonproliferation. Prior to his positions at the State Department, Ambassador Joseph served in the National Security Council as special assistant to the president for Proliferation Strategy, Counterproliferation and Homeland Defense. He was founder of the Center for Counterproliferation Research at the National Defense University. Ambassador Joseph served as U.S. Commissioner to the Standing Consultative Commission and as head of the U.S. delegation to the U.S.-Russian Commission on Nuclear Testing. In 2026, he chaired the U.S. Free and Unified Korea Working Group that developed the policy paper, Toward a Free and Unified Korea-Resolving the Korea Challenge at Its Source, published by NIPP.