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 Ministry of the Interior troops) killed 4 people. Archie Brown suggests that Gorbachev's response this time was better, condemning the rogue action, sending his condolences and suggesting that secession could take place if it went through the procedures outlined in the Soviet constitution. According to Gorbachev's aide, Shakhnazarov, Gorbachev was finally beginning to accept the inevitability of "losing" the Baltic republics, although he would try all political means to preserve the Union. Brown believes that this put him in "imminent danger" of being overthrown by hard-liners opposing secession. Gorbachev continued to work on drafting a new treaty of union which