Mikhail Gorbachev, former Soviet president who took down the Iron Curtain, dies

Mikhail Gorbachev -- the last leader of the former Soviet Union from 1985 until 1991 -- has died at the age of 91.

Mikhail Gorbachev, former Soviet president who took down the Iron Curtain, dies
Mikhail Gorbachev -- the last leader of the former Soviet Union from 1985 until 1991 -- has died at the age of 91.