In mid-August 1945, within weeks of the end of World War II, Americans were polled on whether they approved of the atomic bomb attacks on Hiroshima and Nagasaki.  An overwhelmingly high percentage of Americans—85 percent—answered “yes.” That level of approval has gone down over the years, with (depending on the precise wording of the question) only a slim majority (57 percent in 2005) or a large minority (46 percent in 2015) voicing approval in more recent polls.

This reduction in atomic bombing approval over time has been cited as evidence of a gradual normative change in public ethical consciousness, the acceptance of a “nuclear taboo” or what Brown University scholar Nina Tannenwald has called “the general delegitimation of nuclear weapons.” This common interpretation of US public opinion, however, is too simplistic. Disapproval has indeed grown over time, but most Americans remain supportive of the 1945 attacks, albeit wishing that alternative strategies had been explored. These conclusions can be clearly seen in the results of a new, more complex public opinion survey, conducted for this article, that asked a representative sample of Americans about their views on the bombing of Hiroshima and Nagasaki, examined alternative strategies for ending the war, and provided follow-on questions to determine how the public weighs the costs and benefits of different strategies. Scratch beneath the surface, and the American public today, as in 1945, does not display an ethically based taboo against using nuclear weapons or killing enemy civilians, but rather has a preference for doing whatever was necessary to win the war and save American lives.

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