Gorbachev's reforms of perestroika and glasnost weakened the Soviet Union in the 1980s. This led to the fall of communist governments across Eastern Europe in 1989, culminating in the destruction of the Berlin Wall. In 1991, conservative Soviet leaders launched a coup against Gorbachev but failed due to opposition led by Yeltsin. This led to the dissolution of the Soviet Union and the end of the Cold War.