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
Mikhail Gorbachev arms reduction treaties. Gorbachev toured the Reagan Museum on campus, met with students, and spoke at a convocation in the Reagan Center; he then traveled to the nearby Peoria Civic Center in Peoria, Illinois, as the keynote speaker at the combined George Washington/Ronald Reagan Day Dinner where college president J. David Arnold named him an Honorary Reagan Fellow of Eureka College. To commemorate the 20th anniversary of the fall of the Berlin Wall, Gorbachev accompanied former Polish leader Lech Wałęsa and German Chancellor Angela Merkel at a celebration in Berlin on 9 November 2009. On 7 June 2010, Gorbachev gave