Two words I will always associate with Gorbachev - glasnost and perestroika (openness and restructuring). he always appeared to be the friendly face of the Soviet Union and was the spark to end the Cold War.
Mikhail Gorbachev: The Soviet leader who helped end the Cold War
His efforts to democratise his country led to the fall of communism, the end of the Cold War and the break-up of the Eastern Bloc.
www.bbc.com