U.S. dropped an A-Bomb on Hiroshima, Japan.
North Atlantic Treaty Organization
Senator McCarthy put fear into many communists with the Red hunt, also known as the "Second Red Scare" or "McCarthyism"
Also known as the Special Subcommittee to Investigate the Administration of the Internal Security Act and Other Internal Security Laws.
The U.S. had developed the first H-Bomb named "Mike"
Soviets developed their first H-Bomb.