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 1991 would see a new level of turmoil in the Baltic republics. On 10 January 1991, Gorbachev issued an ultimatum-like request addressing the Lithuanian Supreme Council demanding the restoration of the validity of the constitution of the Soviet Union in Lithuania and revocation of all anti-constitutional laws. In his "Memoirs", Gorbachev asserts that on 12 January he convened the Council of the Federation which agreed to political measures to prevent bloodshed, including sending representatives of the Council of the Federation on a "fact-finding mission" to Vilnius. However, before the delegation arrived, the local branches of the KGB and armed forces