RAF Greenham Common November 1983; they were flown onto the base by Lockheed C-5 Galaxys. A series of meetings held during August and September 1986 culminated in a summit between United States President Ronald Reagan and the General Secretary of the CPSU Mikhail Gorbachev in Reykjavík, Iceland, on 11 October 1986. To the surprise of both men's advisers, the two agreed in principle to removing INF systems from Europe and to equal global limits of 100 INF missile warheads. The United States and the Soviet Union signed the Intermediate-Range Nuclear Forces Treaty in 1987, which led to the removal of all nuclear missiles
Mikhail Gorbachev major campaign to limit alcohol consumption, which Gorbachev—who believed it would improve health and work efficiency—oversaw. His wife keenly supported the measure. As a result, crime rates fell and life expectancy grew slightly between 1986 and 1987. The reform had significant costs to the Soviet economy, resulting in losses of up to $100 billion between 1985 and 1990. Gorbachev later considered the campaign to have been an error. In April 1986 the Chernobyl disaster occurred; in the immediate aftermath, officials fed Gorbachev incorrect information to downplay the incident. As the scale of the disaster became apparent, 336,000 people were evacuated