Bruce B. G. Clarke senior military officer in arms control negotiations with the Soviet Union. After his first year at the State Department he was selected for brigade command but the busy pace of Soviet-American negotiations caused his assignment to be extended one year beyond the normal two-year posting. In his three years at the State Department, he regularly shuttled between negotiations in Washington and Geneva. This period include three summit meetings between President Ronald Reagan and Soviet premier Mikhail Gorbachev: the November 1985 Geneva Summit, the October 1986 Reykjavík Summit and the December 1987 Washington summit where the Intermediate-Range Nuclear Forces Treaty was
Treaty on Conventional Armed Forces in Europe the establishment of an effective verification system. Meanwhile, in December the INF Treaty between the United States and the Soviet Union was signed, effectively allowing mutual inspections. During the May–June 1988 Moscow Summit, US President Ronald Reagan and General Secretary Gorbachev emphasized the importance of stability and security in Europe, specifically calling for data exchange, verification of these data, and then reductions. In December Gorbachev announced at the United Nations a unilateral withdrawal of 50,000 troops from Eastern Europe, and demobilization of 500,000 Soviet troops. In January 1989, NATO and the Warsaw Treaty members produced the Mandate for the Negotiation