[refurb]

I mean, the Allies literally bombed a major city with the first atomic weapon and Japan was like "yeah, not going to surrender". Then after the 2nd bomb, it still took days and a Soviet invasion to get them to surrender.

I'm not sure a demonstration would mean much if destroying a entire city didn't convince them.

[discardedrefuse]

The article I posted covers this (the section called Scale). When put into context, the destruction of Hiroshima just wasn't that impressive. We had already leveled 66 Japanese cities with conventional bombs. Hiroshima may have been a technical / scientific feat, but the end result paled in comparison to what we had already done before.