The Bombing of Nagasaki

Council on Foreign Relations

United States Army Air Forces B-29 bomber Bockscar dropped the Fat Man plutonium bomb on Nagasaki on August 9, 1945, killing 40,000 Japanese residents instantly and causing 34,000 subsequent radiation deaths. This second nuclear strike occurred three days after an atomic bomb on Hiroshima, Japan devastated that city, compelling Emperor Hirohito to intervene and break a cabinet deadlock over unconditional surrender.

President Harry S. Truman authorised the deployment following advice from Secretary of War Henry L. Stimson’s Interim Committee and Japan’s rejection of the Potsdam Declaration. Cloud cover over the primary target of Kokura forced Bockscar to redirect to Nagasaki, compressing the operational schedule before Tokyo could assess Hiroshima or the Soviet Union’s August 8 entry into the war. A Council on Foreign Relations survey regarding the bombing of Nagasaki ranked it among the worst foreign policy decisions in U.S. history.

Comment

The operational transfer of targeting discretion to battlefield commanders during mission execution exposed early friction in nuclear command arrangements. When meteorological conditions obscured Kokura, crew members of Bockscar exercised tactical autonomy to strike Nagasaki without real-time presidential consultation. This delegated authority compressed the decision cycle, pre-empting diplomatic assessment windows in Tokyo. The episode demonstrated how rapid operational execution can outpace strategic political oversight during high-intensity conflict.

Strategic Question for Discussion

How would requiring real-time political re-authorisation for Bockscar after encountering adverse weather over Kokura have redefined the balance between operational flexibility and strategic control in early nuclear doctrine?

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