The decision by the United States to drop atomic bombs on the cities of Hiroshima and Nagasaki in August 1945 remains one of the most controversial moments in modern history. Did the atomic bombs force Japan's surrender in the Second World War? Or is this far too simple a narrative? Speaking to Elinor Evans, historian Richard Overy reconsiders the role of Oppenheimer's bombs, and the US firebombing that paved their way, in the final weeks of the war.

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The HistoryExtra podcast is produced by the team behind BBC History Magazine.

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