> Ground invasion vs. atomic bombings is a false dichotomy. I think you are right for a reason other than the one you are giving here. At the time, there were

> Ground invasion vs. atomic bombings is a false dichotomy. I think you are right for a reason other than the one you are giving here. At the time, there were considerable and growing doubts that invasion was at all feasible at any cost. The bombing survey was only, and could only have been, conducted after the surrender and during the subsequent occupation. The information available at the time, such as the all-out defense of Okinawa and Japan's preparations for doing the same throughout the main islands, was making invasion untenable. Earlier assumptions about the ability of the allies to bring to bear superior force no longer seemed realistic. [1] What about a negotiations? Japan was showing no interest in negotiations, and intercepted diplomatic communications confirmed this. Equally importantly, the allies were opposed to anything less than unconditional surrender because the armistice of 1918 had set the stage for WWII. In addition, there were considerable and realistic doubts that the Japanese military, still occupying a wide swath of Asia, would accept the outcome of such negotiations. There was a fourth option - a naval blockade, promoted by Admiral King - and that was apparently expected to kill far more Japanese than either an invasion (insofar as it was feasible at all) or a nuclear attack with the two bombs then available. As for a demonstration of nuclear weapons: with only two available, if their use failed to bring about a surrender, it would be back to square one for several months. It was not beyond every ethical principle to think that, if these bombs were used, it should be done in a way that maximized their likelihood of ending the war. As it happens, even the bombing of Hiroshima did not seem to bring about meaningful change in the Japanese leadership's position. As we are discussing the ethics of the decision, we should put aside ex post facto judgement such as that from the bombing survey, but also ask whether the cost in Japanese lives was given much consideration in Washington. I have not seen anything definitive either way, and I am sure Japanese lives did not count as equal to allied ones, but it seems clear that, out of what seemed to be the feasible alternatives available, the use of nuclear bombs did not stand out in terms of civilian casualties and human suffering. [1] Richard B. Frank, Downfall: The End of the Imperial Japanese Empire.