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
1996 Mikhail Gorbachev presidential campaign until its dissolution in December 1991. Following the dissolution of the Soviet Union, Boris Yeltsin (whose rise to power Gorbachev had tried to prevent) became the Russian head-of-state. Gorbachev had, reportedly, been contemplating a political return since sometime in the middle of 1993. Gorbachev was still a vigorous and opinionated man. He desired to escape from his political exile and to repair his image. Gorbachev was also motivated, amid chaotic reform efforts by Yeltsin, by a belief that he could implement far superior (and less disastrous) reform than Yeltsin. Gorbachev also had a strong personal animosity towards Yeltsin. All of