Once upon a time there where two countries The United States of America but likes to be referred to as The US and another named Japan. These two countries where not friends but didn't hate each other.

Hey US

Hey Japan

One day The US got into a big fight between Japan's buddy Germany and things got serious when The US was beating up Germany after Germany punched many of the smaller countries and going for the bigger ones. Though Japan know his buddy would need the help and that Japan would get a reward for it. So Japan targets the US.

Oh no my buddy.

Japan goes and surprises The US and kick them right in Pearl Harbor. This lead to them hating each other and now in a fight. This goes on and finally The US has enough and decides to drop the bomb and beat up Japan hard and drops it right in Hiroshima. Then decides to go for more and drops right in Nagasaki ending there fight in Japan giving up.

Ouch. Not Pearl Horbor.

...

People look at this ending to this fight between the countries The United States and Japan and think it was the right thing to do but others think not. Others think there were other solutions to this problem.

There are other ways this could have happened.