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 However, the Supreme Soviet could not agree on which program to adopt. Gorbachev pressed on with political reform; his proposal for setting up a new Soviet government, with a Soviet of the Federation consisting of representatives from all 15 republics, was passed through the Supreme Soviet in November. In December, Gorbachev was once more granted increased executive power by the Supreme Soviet, arguing that such moves were necessary to counter "the dark forces of nationalism". Such moves led to Eduard Shevardnadze's resignation; Gorbachev's former ally warned of an impending dictatorship. This move was a serious blow to Gorbachev personally and