{"id":54095,"date":"2025-07-04T05:56:14","date_gmt":"2025-07-04T13:56:14","guid":{"rendered":"https:\/\/www.antiwar.com\/blog\/?p=54095"},"modified":"2025-07-04T07:30:57","modified_gmt":"2025-07-04T15:30:57","slug":"on-july-4-1945-the-man-who-tried-to-halt-the-atomic-bombings","status":"publish","type":"post","link":"https:\/\/www.antiwar.com\/blog\/2025\/07\/04\/on-july-4-1945-the-man-who-tried-to-halt-the-atomic-bombings\/","title":{"rendered":"On July 4, 1945: The Man Who Tried To Halt the Atomic Bombings"},"content":{"rendered":"

Reprinted with permission from Greg Mitchell\u2019s newsletter Oppenheimer: From Hiroshima to Hollywood<\/a>.<\/i><\/strong><\/p>\n

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On July 4, 1945, the great atomic scientist<\/strong> Leo Szilard finished a letter that would become the strongest (and one of the very few) real attempts at halting President Truman’s march to using the atomic bomb \u2013 which was two weeks from its first test at Trinity \u2013 against Japanese cities.<\/p>\n

It\u2019s well known that as the Truman White House made plans to use the first atomic bombs against Japan in the summer of 1945, a large group of atomic scientists, many of whom had worked on the bomb project, raised their voices, or at least their names, in protest. They were led by the Szilard. On July 3, he finished a petition to the president for his fellow scientists to consider, which called atomic bombs \u201ca means for the ruthless annihilation of cities.\u201d It asked the president \u201cto rule that the United States shall not, in the present phase of the war, resort to the use of atomic bombs.\u201d<\/p>\n

The following day, July 4, he wrote this cover letter (below). The same day, Leslie Groves, military chief of the Manhattan Project, wrote Winston Churchill\u2019s science advisor<\/a> seeking advice on how to combat Szilard and his colleagues. The FBI was already following Szilard. The bomb would be dropped over Hiroshima on August 6.<\/p>\n

July 4, 1945<\/strong><\/em><\/p>\n

Dear _______________<\/p>\n

Enclosed is the text of a petition which will be submitted to the President of the United States. As you will see, this petition is based on purely moral considerations.<\/p><\/blockquote>\n

It may very well be that the decision of the President whether or not to use atomic bombs in the war against Japan will largely be based on considerations of expediency. On the basis of expediency, many arguments could be put forward both for and against our use of atomic bombs against Japan.<\/p><\/blockquote>\n

Such arguments could be considered only within the framework of a thorough analysis of the situation which will face the United States after this war and it was felt that no useful purpose would be served by considering arguments of expediency in a short petition.<\/p><\/blockquote>\n

However small the chance might be that our petition may influence the course of events, I personally feel that it would be a matter of importance if a large number of scientists who have worked in this field went clearly and unmistakably on record as to their opposition on moral grounds to the use of these bombs in the present phase of the war.<\/p><\/blockquote>\n

Many of us are inclined to say that individual Germans share the guilt for the acts which Germany committed during this war because they did not raise their voices in protest against these acts. Their defense that their protest would have been of no avail hardly seems acceptable even though these Germans could not have protests without running risks to life and liberty. We are in a position to raise our voices without incurring any such risks even though we might incur the displeasure of some of those who are at present in charge of controlling the work on \u201catomic power\u201d.<\/p><\/blockquote>\n

The fact that the people of the people of the United States are unaware of the choice which faces us increases our responsibility in this matter since those who have worked on \u201catomic power\u201d represent a sample of the population and they alone are in a position to form an opinion and declare their stand.<\/p><\/blockquote>\n

Anyone who might wish to go on record by signing the petition ought to have an opportunity to do so and, therefore, it would be appreciated if you could give every member of your group an opportunity for signing.<\/p><\/blockquote>\n

Leo Szilard<\/em><\/p><\/blockquote>\n

What happened next?<\/strong> Well, the petition gained from than 180 signatures\u2014Oppenheimer obviously not one, and actively discouraged others \u2013 but was then delayed in getting to President Truman by Gen. Leslie Groves, military head of the Manhattan Project, until the A-bombs were ready to use, in early August. Groves also commissioned a poll of atomic scientists, which found that over 80% favored a demonstration shot only \u2013 so he squelched that, too. Much more in my 2020 book: The Beginning or the End: How Hollywood \u2013 and America \u2013 Learned to Stop Worrying and Love the Bomb.<\/a><\/strong><\/em><\/p>\n

I\u2019ve mentioned previously<\/strong> that my new award-winning film<\/a> will start streaming, and screening on TV, from PBS on July 12. This week the companion e-book with the same title has been published: \u201cThe Atomic Bowl: Football at Ground Zero \u2013 and Nuclear Peril Today<\/a>.\u201d It\u2019s just $5.79 and includes previously unpublished stills and material from the film and much more. Read more here<\/a>. Thanks.<\/p>\n

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Thanks for reading Oppenheimer and the Legacy of His Bomb ! Subscribe for free to receive new posts and support my work.<\/strong><\/p>\n<\/div>\n

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