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 to his efforts for reform. Meanwhile, Gorbachev was losing further ground to nationalists. October 1990 saw the founding of DemRossiya, the Russian pro-reform coalition; a few days later, both Ukraine and Russia declared their laws completely sovereign over Soviet laws. The 'war of laws' had become an open battle, with the Supreme Soviet refusing to recognise the actions of the two republics. Gorbachev would publish the draft of a new union treaty in November, which envisioned a continued union called the Union of Sovereign Soviet Republics, but, going into 1991, Gorbachev's actions were steadily overpowered by secessionism. January and February