As the fall of the Soviet Union appeared eminent, the United States and their allies began to worry about the concept that the nuclear weapons held in smaller countries by the Soviet Union could fall or would fall into enemy hands. The Cooperative Threat Reduction (CTR) Program was an initiative housed within the Defense Threat Reduction Agency (DTRA). The CTR program is better known as the Nunn–Lugar Act based on the Soviet Nuclear Threat Reduction Act of 1991 which was authored and cosponsored by Sens. Sam Nunn (D-GA) and Richard Lugar (R-IN). This Act was created in 1986 in a congressional meeting. According to the CTR website, "the purpose of the CTR Program is to secure and dismantle weapons of mass destruction and their associated infrastructure in former Soviet Union states."Another explanation of purpose of the program is "to secure and dismantle weapons of mass destruction in states of the former Soviet Union and beyond".
CTR provides funding and expertise for states in the former Soviet Union (including Russia, Ukraine, Georgia, Azerbaijan, Belarus, Uzbekistan, and Kazakhstan) to decommission nuclear, biological, and chemical weapon stockpiles, as agreed by the Soviet Union under disarmament treaties such as SALT I. This funding totaled 400 million dollars a year for a total of four years. After nuclear warheads were removed by the FSU military from their delivery vehicles, Nunn-Lugar assistance provided equipment and supplies to destroy the missiles on which the warheads had been mounted, as well as the silos which had contained the missiles. Warheads were then destroyed in Russia, with the highly enriched uranium contained in them made into commercial reactor fuel which was purchased by the U.S. under a separate program.