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
Shamrock Summit Shamrock Summit The Shamrock Summit was the colloquial name given to the 18 March 1985 meeting between Canadian Prime Minister Brian Mulroney and US President Ronald Reagan in Quebec City. It gained this nickname because of the Irish background of the two leaders and because the meeting was held the day after St. Patrick's Day. The summit was capped by a televised event where Mulroney, Reagan and their wives sang "When Irish Eyes are Smiling", which publicly exemplified the camaraderie between the two leaders. The event is considered a major political-cultural episode in Canada, mostly on the basis of the