Rising Tensions.....in the lab?

Ok. So, obviously the regular old weapons that American soldiers were using in battles, weren't doing enough damage. So, scientists started brainstorming ways to do the most damage, with the least amount of effort. The only solution to that problem would be....nuclear weapons. Nuclear weapons consisted of bombs based on atomic fission and fusion. The hydrogen bomb, H-bomb, is perhaps to most famous. On May 20 (21 Pacific Time), 1956, this bomb was dropped on Hiroshima, Japan. And from this day on, America was known as the country to beat. Which, of course may have triggered some of the other countries' egos.