Soviets succeed with first atomic bomb at a sight at Semipalatinsk Test Site in Kazakhstan.
Tsar Bomba (King of the Bombs/ Big Ivan)
Soviets set off a bomb that is said to be the largest bomb the world has seen up to this point in time. With an estimated 58 megatons, the equivalent of more than 50 million tons of TNT, or more than all the explosives used during World War II. This is set off after the US and USSR agree to limit nuclear testing.
Russians Plant Missiles in Cuba
US discovers that the Russians are planning to plot nuclear missiles in communist Cuba.