It's been more than a week since my wife and I watched #Oppenheimer at our local cinema and I still can't stop looking into it. Most importantly, the moral question of the bombings themselves. If indeed the bombings didn't influence the thinking of Japan's government as some new narratives suggest, then why did Emperor Hirohito mention it in his speech announcing Japan's surrender? Obviously it did play a role in conjunction with the USSR's war declaration.
Wikiwand - Hirohito surrender broadcast
The Hirohito surrender broadcast was a radio broadcast of surrender given by Hirohito, the emperor of Japan, on 15 August 1945. It announced to the Japanese people that the Japanese government had accepted the Potsdam Declaration demanding the unconditional surrender of the Japanese military at the end of World War II. Following the Hiroshima bombing on August 6, the Soviet declaration of war and the Nagasaki bombing on August 9, the Emperor's speech was broadcast at noon Japan Standard Time on 15 August 1945, and referred to the atomic bombs as a reason for the surrender. The speech is the first known instance of a Japanese emperor speaking to the common people . It was delivered in formal Classical Japanese, with much pronunciation unfamiliar to ordinary Japanese. The speech made no direct reference to a surrender of Japan, instead stating that the government had been instructed to accept the "joint declaration" of the United States, the United Kingdom, China, and the Soviet Union. This confused many listeners not familiar with the declaration about whether Japan had actually surrendered. Both the poor audio quality of the radio broadcast and the formal courtly language worsened the confusion.