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
Premier of the Soviet Union USSR. However, Kosygin's prestige was weakened when he proposed the economic reform of 1965. Under the 1977 Soviet Constitution, the Premier of the Council of Ministers was the head of government of the USSR. The Premier was the chief of the executive branch and head of the Soviet government as a whole, the premiership was the most powerful governmental office in the USSR by influence and recognition until the establishment of the presidency during 1990. The Premier was responsible and accountable to the Supreme Soviet and during the period between sessions of the Supreme Soviet he was also accountable to