I have to agree with Howell. Stalin’s plans to invade Northern Japan on August 12th is a very important part of the story. Also, the fact that leaflets were dropped on all the possible target cities in Japanese warning civilians that a new weapon had been developed and that they should evacuate their cities.

And you might want to mention that the Japanese Imperial Army repeatedly told the Japanese civilians that this was all US propaganda and that they were winning the war. In fact, even after Hiroshima they were telling Japanese civilians that the city hadn’t been bombed and that they should all continue sharping bamboo stakes to repel a ground invasion even if it meant sacrificing the lives of every last Japanese citizen to do it.

The real tragedy is that Japan didn’t surrender after Midway. This would have prevented Okinawa and the fire bombings of Tokyo which killed at least 100,000 Japanese civilians.

Probably the lives of millions of Allied soldiers who died in Japanese POW camps.