Mikhail Gorbachev, the last leader of the Soviet Union who was largely responsible for ending the Cold War, has died.
Gorbachev was General Secretary of the Communist Party of the Soviet Union from 1985 - 1991. His title changed to President in 1990.
He was initially a Marxist-Leninist, but eventually realized his country needed to evolve into a more democratic union.
Maybe the most famous reference to Gorbachev was one where he was not present -- when Ronald Reagan paid a visit to the Berlin wall -- which separated the Communist East Berlin from the democratic West Berlin -- and challenged his counterpart to "tear down this wall."