[tanknetter]

Really??? I have never heard that.

Sort of. There was no explicit "we have this thing called the 'atomic bomb' and if you don't surrender right now we're going to start incinerating your remaining cities using it" warning.

There were general warnings that the US was prepared to systematically start blowing Japanese cities off the map. The major one was by Truman at Potsdam. But the more specific "rain of ruin" warning came after Hiroshima, not before.

[Calpublican]

They dropped a million leaflets on Hiroshima and surrounding areas warning citizens to evacuate.

[Calpublican]

They dropped a million leaflets on Hiroshima and surrounding areas warning citizens to evacuate.