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,
Presidency of Ronald Reagan Regan with Howard Baker. The investigations into the Iran–Contra scandal continued after Reagan left office, but were effectively halted when President George H. W. Bush pardoned Secretary of Defense Caspar Weinberger before his trial began. Investigators did not find conclusive proof that Reagan had known about the aid provided to the Contras, but Walsh's report noted that Reagan had "created the conditions which made possible the crimes committed by others" and had "knowingly participated or acquiesced in covering up the scandal." Three different Soviet leaders died between 1982 and 1985, leaving the Soviets with an unstable leadership until Mikhail Gorbachev