Prison and death camps for enemies, with Hitler there were the famous concentration camps, and with Stalin there were the ever-so-similar gulags
The Truman Doctrine established that the US would provide support to other countries under threat from Communism by the Soviets. This also resulted in the Korean War 3 years later.
Answer:
Considering the fact that Atomic Bombs were a fairly new concept, it likely was an eye-opener for the Soviet Union, in the way that they felt threatened at the fact that such a weapon existed and had been possessed by another entity. And so, this essentially describes the Cold War in a nutshell, as the tension between the two powers of the world (the US and the USSR) set out for an arms race.
