Thomas Graham Jr. (October 9, 1933 to September 3, 2026) was an American diplomat, lawyer and author who spent 27 years at the U.S. Arms Control and Disarmament Agency (ACDA) and took part in every major arms control and non-proliferation negotiation the United States conducted between 1970 and 1997. He is best remembered for leading the U.S. government effort that secured the indefinite extension of the Treaty on the Non-Proliferation of Nuclear Weapons (NPT) in 1995, a decision that made the treaty permanent and turned it into the bedrock of the global non-proliferation regime.
Graham was born in Louisville, Kentucky, to Thomas Graham, a Louisville financier from a family of Presbyterian ministers, and Charlotte Henriques of New York. His father was treasurer of the Democratic Party in Louisville, ran for mayor in 1948 and, in one of the family's proudest moments, arranged for the city to present its key to Jackie Robinson in 1950. Graham later called his upbringing a "golden childhood" in his memoir. His father took him to national political conventions as early as 1952, and his mother's love of horse racing and her Kentucky Derby parties gave him a lifelong devotion to the Derby. He attended more than 50 of them and called the race a "religious holiday."
He attended Louisville Male High School, where he was elected president of the Athenaeum Literary Association, and then Princeton University, graduating from the Woodrow Wilson School of Public and International Affairs in 1955 with a senior thesis on American attitudes toward Soviet power. He studied for a year at the Institut d'Etudes Politiques in Paris, served in the U.S. Army from 1956 to 1958, and earned his J.D. from Harvard Law School in 1961, where he took Henry Kissinger's seminar on defense policy.
After law school he clerked for Chief Judge Wilbur Miller of the U.S. Court of Appeals for the District of Columbia Circuit, worked for the House Committee on Banking and Currency, and served as legislative assistant to Comptroller of the Currency James J. Saxon. Shaken by the chaos of the 1968 Democratic National Convention, he switched parties, worked for United Citizens for Nixon-Agnew, and practiced law at Shearman and Sterling in New York before becoming a civilian attorney for the U.S. Air Force in 1969.
In 1970 he joined ACDA, and he stayed for 27 years under six presidents of both parties. He was the agency's general counsel for 15 years. He worked on the Strategic Arms Limitation Talks (SALT), the Anti-Ballistic Missile Treaty, the Intermediate-Range Nuclear Forces Treaty, the Conventional Armed Forces in Europe Treaty, the START treaties and the Comprehensive Nuclear-Test-Ban Treaty, and he supported work on the Chemical Weapons Convention and the Biological Weapons Convention. In 1985 he wrote a legal memorandum concluding that the Reagan administration's Strategic Defense Initiative, the "Star Wars" program, technically violated the ABM Treaty. He served as acting director of ACDA from January to November 1993 and acting deputy director until July 1994, and he was in the Kremlin in January 1993 when Presidents George H. W. Bush and Boris Yeltsin signed START II.
In 1994 President Bill Clinton named him special representative for arms control, non-proliferation and disarmament with the rank of ambassador. Ahead of the 1995 NPT Review and Extension Conference he met senior representatives of more than 100 treaty parties, arguing that the treaty was not a favor to non-nuclear states but essential to the security of every party, including the United States. Colleagues remembered his relentless optimism. The conference agreed to extend the treaty indefinitely.
After retiring from government in 1997, Graham taught at Stanford University, the University of Virginia, the University of Washington, Oregon State University, Georgetown University and the University of California, Berkeley. He worked with the Lawyers Alliance for World Security, the law firm Morgan Lewis and the Global Security Institute. He chaired the board of Lightbridge Corporation, a nuclear fuel technology company, from 2009 to 2024, sat on the international advisory board of the United Arab Emirates nuclear energy program, served on the board of CanAlaska Uranium and co-chaired the Atlantic Council's Nuclear Energy and National Security Coalition. He argued that non-proliferation and civil nuclear energy were compatible goals.
A prolific writer, he published more than a dozen books, including his memoir Disarmament Sketches (2002), Common Sense on Weapons of Mass Destruction (2004), Unending Crisis (2012), the Cold War novel Sapphire (2014) and Seeing the Light: The Case for Nuclear Power in the 21st Century (2017, with Scott Montgomery), plus more than 100 commentary articles. Until his final weeks he wrote for his Substack, Defending Democracy, on nuclear issues, Ukraine, Taiwan and threats to democracy.
Graham married Clover Nicholas in 1968; they had three children, and after the marriage ended he bought a house a block away to stay close to them. He married Christine Ryan in 1983, gaining two stepchildren. He played tennis into his 90s, hiked in the Adirondack high peaks, loved Tosca and Handel's Messiah, and led family carol singing every Christmas Eve. He was devoted to his Episcopalian faith and to Kentucky.
Graham died at his home in Washington, D.C., on September 3, 2026, at the age of 92. His cause of death was not made public. His funeral was held on September 14 at Immaculate Conception Church in Washington, followed by a family burial beside his parents at Cave Hill Cemetery in Louisville. His family asked that gifts be made to the American Civil Liberties Union or Doctors Without Borders.
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7Posts by Thomas, and posts about them, kept here so they are not lost.