What if the US, even if the nuclear bombs were ready by early 1945 for Japan, opted not to drop it and instead used conventional warfare? From conventional bombing to eventually 4 main island invasions. Implications on the casualty both on US, JIA soldiers and civilians and prolonging the war vs Japan? Would this have ended with the annihilation of the Japanese race? Personally I think that in all irony, the bombs actually saved Japan from extinction. Convincing the Japanese government and military to unconditional surrender was the main goal of the US. Hope this subject was not tackled earlier, otherwise please lock, thanks!