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
Mikhail Gorbachev Soviet Union. Coit D. Blacker wrote in 1990 that the Soviet leadership "appeared to have believed that whatever loss of authority the Soviet Union might suffer in Eastern Europe would be more than offset by a net increase in its influence in Western Europe". Nevertheless, it is unlikely that Gorbachev ever intended for the dismantling of Communism in Warsaw Pact countries. Rather, he assumed that the Communist parties of Eastern Europe could be reformed in a similar way to the reforms he hoped to achieve in the CPSU. Just as "perestroika" was aimed at making the USSR more efficient economically