Disposition of Excess Plutonium During the Cold War, the Soviet Union and United States produced huge quantities of plutonium for weapons. In the early 1990s, following substantial cuts in their nuclear arsenals, Russia and the United States began discussing what to do with their excess weapon materials and, in 2000, concluded a Plutonium Management and Disposition Agreement (PMDA), committing each to eliminate 34 tons of excess weapon plutonium. 103
Bunn, Matthew, and Anatoli Diakov. "Global Fissile Materials Report 2007: Disposition of Excess Plutonium." International Panel on Fissile Materials, 2007.