Describe the origins of the cold war?

Communism EXISTED before WW2. The "Cold War" emerged when man entered the Atomic Age in 1945. The introduction of Atomic Weapons now made it suicide for total war to be conducted. Therefore, it was now a "stand-off." Commonly referred to as a Cold War. Only "limited wars" could now be fought between the Communist World and the Free World; Korean War (1950-1953) & Vietnam War (1961-1975). Limited to the use of CONVENTIONAL WEAPONS ONLY.