Presidency of Ronald Reagan to forestall the possibility of an agreement between the United States and the Soviet Union. Nonetheless, both Gorbachev and Reagan agreed to continue arms control negotiations at the October 1986 Reykjavík Summit. At the summit, Gorbachev and Reagan closed in on an agreement to greatly reduce or eliminate the nuclear stockpiles of both the U.S. and the Soviet Union over a ten-year period, but the deal collapsed due to disagreements regarding SDI development. Reagan attacked Gorbachev in a 1987 speech delivered in West Berlin, but negotiations continued. Gorbachev and Reagan broke the impasse by agreeing to negotiate separate treaties on
Gabriele Gast of a major chemicals plant in Libya. Overall, Gast was able to pass copies of 49 detailed western intelligence reports to Wolf, covering topics that ranged from West Germany's internal economic challenges to analyses of Soviet politics and the impact of the Soviet space programme. Something else on which she Gast was able to share the analysis of the western intelligence services with her eastern employers was the summit meeting between Presidents Reagan and Gorbachev. In East Berlin her HVA handlers trusted her completely to identify which documents should be copied: there was no attempt or need to guide her