Major events in the life and career of Mikhail Gorbachev

FILE - East Berliners get helping hands from West Berliners as they climb the Berlin Wall which has divided the city since the end of World War II, near the Brandenburger Tor (Branderburg Gate), early Friday morning, Nov. 10, 1989. (AP Photo/Jockel Finck, File)

Major events in the life and career of Mikhail Gorbachev