Here is the story of how the Cold War between the United States and the USSR was brought under control before it escalated into a full-scale war. In a rarely appreciated twist of events, nuclear reactor B and its associated facilities produced the nuclear weapons that prevented the Soviets from starting an all-out war that would have meant mutual destruction for these two nations. Overall, a visit to the historic nuclear reactor B museum will give travelers a deeper understanding of what happened during the Cold War of the late 20th century.