Mikhail Gorbachev, the final leader of the Soviet Union and a transformational figure who helped end the Cold War, has died at 91, according to the Gorbachev Foundation. | NBC Nightly News with Tom Llamas

Mikhail Gorbachev has warned that tension between Russia and the West is putting the world in "colossal danger". The former Soviet leader is calling for all countries to destroy nuclear weapons. bbc.in/2WMjn2z | BBC News

History was made in Geneva when President Reagan and Mikhail Gorbachev met in person, highlighting that even nations at odds can embrace dialogue over conflict. Watch Reagan reflect on this pivotal moment. | The Ronald Reagan Presidential Foundation and Institute

President Ronald Reagan and General Secretary Mikhail Gorbachev addressed the citizens of one another's countries about the nature of the holiday season, the treaty between the United States and the Soviet Union and the possibility of a brighter future. Watch this Saturday at 7 PM ET on C-SPAN2 and online at https://www.c-span.org/video/?438898-1/ronald-reagan-mikhail-gorbachev-years-day-messages | American History TV