The first full U.S. report on the results of the atomic bombing of Hiroshima, 80 years ago this week, made a “conservative estimate” that around 100,000 people had been killed, according to a newly published report from the U.S. Army Air Forces on Tinian Island, dated August 8, 1945.
Washington, D.C., August 8, 2022 – After years of research and planning, U.S. officials and scientists overseeing the Manhattan Project were startlingly unprepared for the emergence of evidence of the long-term effects of radiation generated by the atomic bomb – even after the Trinity test in July 1945 and the bombings of Hiroshima and Nagasaki 77 years ago this week, according to documents posted today by the National Security Archive.
To mark the 75th anniversary of the atomic bombings of Hiroshima and Nagasaki in August 1945, the National Security Archive is updating and reposting one of its most popular e-books of the past 25 years.
The National Security Archive is publishing a set of documents to commemorate the life and achievements of Llewellyn Thompson and highlight the publication of a biography of him written by his daughters, Jenny Thompson and Sherry Thompson (The Kremlinologist: Llewellyn E Thompson, America's Man in Cold War Moscow (Johns Hopkins Nuclear History and Contemporary Affairs, 2018). The posting contains never before published translations of Russian memcons with Khrushchev and Thompson’s cables from Moscow.
US dropped prosecution of Chicago Tribune for espionage during World War II for leaking that US Navy knew about Japanese plans to attack Midway Island
To commemorate the anniversary of the atomic bombings of Japan in August 1945, the Nuclear Vault is adding two documents to the posting: The Atomic Bomb and the End of World War II: A Collection of Primary Sources. Document 91 is a British embassy telegram from 14 August 1945, portraying President Harry S. Truman weighing […]
August 4, 2015- A few months after the atomic bombings of Hiroshima and Nagasaki, General Dwight D. Eisenhower commented during a social occasion “how he had hoped that the war might have ended without our having to use the atomic bomb.” This virtually unknown evidence from the diary of Robert P. Meiklejohn, an assistant to Ambassador W. Averell Harriman, published for the first time today by the National Security Archive, confirms that the future President Eisenhower had early misgivings about the first use of atomic weapons by the United States. General George C.
Washington, D.C., August 5, 2005 - Sixty years ago this month, the United States dropped atomic bombs on Hiroshima and Nagasaki, the Soviet Union declared war on Japan, and the Japanese government surrendered to the United States and its allies. The nuclear age had truly begun with the first military use of atomic weapons. With the material that follows, the National Security Archive publishes the most comprehensive on-line collection to date of declassified U.S. government documents on the atomic bomb and the end of the war in the Pacific.