One of the points of the A-Bomb was to show Japan our raw power. What if we showed them what the A-Bomb could potentially do instead of without warning dropping a massive bomb on a populated place? The Japaneese government was obviously afraid of our power and that's why the surrendered. Why couldn't we scare them without actually killing so many people?

Well, if that wouldn't work then I would rather have hundreds of thousands die instead of a few million.

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