CNN's probing interview with a key surviving protagonist from the TV series, "The Cold War."

· Fidel Castro went into exile on his release from prison after initiating an armed attack against the Batista dictatorship. One night in Mexico he met a young Argentine doctor Ernesto Guevara. They talked until dawn, sharing their ideas and dreams, when "Che" agreed to join the expedition back to Cuba to restore popular rule. The rest is history