Alex Wellerstein, "The Most Awful Responsibility: Truman and the Secret Struggle for Control of the Atomic Age" (Harper, 2025)

Dropping the atomic bombs on Japan during World War II was, arguably, the most controversial decision of the 20th century. The responsibility for that “decision” has logically fallen on US President Harry S. Truman. But in The Most Awful Responsibility: Truman and the Secret Struggle for Control of the Atomic Age (Harper, 2025), Alex Wellerstein argues that Truman's actual decision wasn’t what everyone thinks it was.

The conventional narrative is that American leaders had a choice: Invade Japan, which would have cost millions of Allied and Japanese lives, or instead, use the atom bomb in the hope of convincing Japan to surrender. Truman, the story goes, carefully weighed the pros and cons before deciding that the atomic bomb would be used against Japanese cities, as the lesser of two evils.

But nuclear historian Alex Wellerstein argues that is not what happened.

Not only did Truman not take part in the decision to use the bomb, but the one major decision that he did make was a very different one — one that he himself did not fully understand until after the atomic bomb was used. The weight of that decision, and that misunderstanding, became the major reason that atomic bombs have not been used again since World War II.

Based on a close reading of the historical record, The Most Awful Responsibility shows that, despite his reputation as an ardent defender of the atomic bomb, Truman:

• Wanted to avoid the “murder” and “slaughter” of innocent civilians
• Believed that the atomic bomb should never be used again
• Hoped that nuclear weapons would be outlawed in his lifetime

Wellerstein makes a startling case that Truman was possibly the most anti-nuclear American president of the twentieth century, but his ambitions were strongly constrained by the domestic and international politics of the postwar world and the early Cold War. This book is a must-read for all who want to truly understand not only why the bomb was dropped on Japan but also why it has not been used since.

Dr. Andrew O. Pace is a historian of the US in the world who specializes in the fog of war. He is currently a DPAA Research Partner Fellow at the University of Southern Mississippi and a co-host of the Diplomatic History Channel on the New Books Network. He is also working on his first book which examines why the United States pursued victory at practically all costs during World War II. He can be reached at andrew.pace@usm.edu or here. Andrew is not an employee of DPAA, he supports DPAA through a partnership. The views presented are those of the author and do not necessarily represent the views of DPAA, DoD or its components. 

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