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Elected to the U.S. Senate in 1972, Sam Nunn served for twenty-four years, becoming chair of the Senate Armed Services Committee and the Permanent Subcommittee on Investigations.
As a Senator, he played a major role in the Goldwater-Nichols Department of Defense Reorganization Act of 1986; in 1992, he and Senator Richard Lugar sponsored a law forming the Cooperative Threat Reduction programs, which secured and dismantled weapons of mass destruction in the former Soviet Union states.
While Nunn has retired from the Senate, he remains active on the political scene. He is currently co-chair and CEO of the Nuclear Threat Initiative, a charitable organization working to reduce the threat of nuclear, biological, and chemical weapons. Nunn is also actively involved with Georgia Tech's Sam Nunn School of International Affairs founded in 1991.