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 ordered him to punish Fagien B. Sadykov, a Stavropol-based agronomist whose ideas were regarded as critical of Soviet agricultural policy; Gorbachev ensured that Sadykov was fired from teaching but ignored calls for him to face tougher punishment. Gorbachev later related that he was "deeply affected" by the incident; "my conscience tormented me" for overseeing Sadykov's persecution. In April 1970, Yefremov was promoted to a higher position in Moscow and Gorbachev took his job. This granted Gorbachev significant power over the Stavropol region. He had been personally vetted for the position by senior Kremlin leaders and was informed of their decision