Cold War (1985–1991) reduced some strategic arms unilaterally. Fundamental to the dissolution of the Soviet Union, the Gorbachev policy initiatives of Restructuring ("Perestroika") and Openness ("Glasnost") had ripple effects throughout the Soviet world, including eventually making it impossible to reassert central control over Warsaw Pact member states without resorting to military force. On June 12, 1987, Reagan challenged Gorbachev to go further with his reforms and democratization by tearing down the Berlin Wall. In a speech at the Brandenburg Gate next to the wall, Reagan stated: While the aging communist European leaders kept their states in the grip of "normalization", Gorbachev's reformist policies
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