The result of the great terror also known by Stalin as the Great Purge, led to millions of death under Joseph Stalin's command, and possibly the cold war..
This furthermore led to an unreliable alliance for the western Allies and the Eastern bloc, as this just showed the gruesomeness of the Soviet Union. The uneasy alliance may have lead to the misuse of missiles by both sides, not sure if the other superpower wanted peace... or war.