The Cold War arms race unfolds through archival footage and expert narration, tracking how the world edged toward Mutually Assured Destruction. Bomber squadrons sit on constant alert at bases lining the Iron Curtain, ready to launch on short notice. The film covers the 1956 Hungarian uprising, where Soviet troops crush a brief taste of freedom and send thousands fleeing to Austria, and Fidel Castro's takeover of Cuba, which ends in the failed American invasion at the Bay of Pigs. Sputnik's beep and Yuri Gagarin's flight mark Soviet technological wins that rattle Western confidence, while the sudden sealing of West Berlin with barbed wire, later replaced by concrete, cuts off the last escape route between East and West and turns the wall into the site of desperate breakout attempts. Moving chronologically through these flashpoints, the episode builds a picture of a world where superpower rivalry kept edging toward catastrophe. Part of the M.A.D. World series from Timeline, drawing on period footage to trace how each crisis raised the stakes of nuclear confrontation.