Ronald Reagan explained his strategy was an arms buildup that would leave the Soviets far behind, with no choice but to negotiate arms reduction. Finally, displaying his characteristic optimism, he praised liberal democracy and promised that such a system eventually would triumph over Soviet communism. Reagan appreciated the revolutionary change in the direction of the Soviet policy with Mikhail Gorbachev, and shifted to diplomacy, with a view to encourage the Soviet leader to pursue substantial arms agreements. He and Gorbachev held four summit conferences between 1985 and 1988: the first in Geneva, Switzerland, the second in Reykjavík, Iceland, the third in Washington,
Mikhail Gorbachev Intermediate-Range Nuclear Forces Treaty, saying the move "is not the work of a great mind." Gorbachev also said that "all agreements aimed at nuclear disarmament and the limitation of nuclear weapons must be preserved for the sake of life on Earth." Gorbachev signed the U.S.-Soviet nuclear disarmament treaty in 1987 with President Ronald Reagan. Gorbachev hailed the George H.W. Bush’s role in helping end the Cold War following the news of the former President's death, saying: "We had a chance to work together during the years of tremendous changes. It was a dramatic time that demanded great responsibility from everyone.