Wars and Conflicts

Washington, D.C., September 25, 2025 - Newly published documents and photographs concerning the radiation and blast effects of the August 1945 bombings of Hiroshima and Nagasaki provide graphic details on how U.S. and British officials first assessed the deadly impact of the atomic weapons. These and other records published today are among the data and evidence that helped undermine the public claim made at the time by Manhattan Project director Gen. Leslie Groves that radiation sickness was “a pleasant way to die.”

Washington, D.C., May 22, 2025 - Early in the morning of October 7, 1963, the top leadership of the Central Intelligence Agency (CIA) gathered in the office of the Director of Central Intelligence (DCI) to discuss the brewing crisis in South Vietnam and America’s role in it. DCI John McCone warned his colleagues: “Under no circumstances” should “the Agency get into the subject of assassination or other highly sensitive matters with [U.S.

Washington, D.C., November 1, 2024 - A recently declassified “after-action” report from a 2002 war game “triggered internal warnings that the U.S. military was vulnerable to low-tech warfare,” according to an article in this week’s Washington Post written by National Security Archive fellow Nate Jones.

Washington, D.C., March 24, 2023 - On Tuesday, March 28, 2023, PBS’s “American Experience” program premieres “The Movement and the ‘Madman,’” a documentary that tells the story of how the intensity of the U.S. anti-Vietnam War movement forced President Richard Nixon to abandon plans to escalate the conflict in the fall of 1969 and instead implement his “madman” theory, approving a secret alert of U.S. nuclear forces around the world to project the idea that he was “crazy” and force adversaries to back down.

Washington, D.C., July 12, 2011 - What were the 11 words the government didn’t want you to see? 

Bogotá, 28 June 2022 - Today, Colombia’s Truth Commission wraps up three-and-a-half years of work with the launch of its report on the causes and consequences of Colombia’s conflict. The publication of the Commission's findings and recommendations is an important step forward in guaranteeing the rights of victims and of Colombian society to know the truth about what happened, to build a foundation for coexistence among Colombians, and to ensure that such a conflict is never repeated.

Washington, D.C., June 27, 2022 – In a remarkable example of transforming the mundane into high art, poet Mai Der Vang, daughter of Hmong refugees and finalist for the 2022 Pulitzer Prize in Poetry, pored through thousands of pages of declassified documents from the collections of the National Security Archive and other sources to find material for her poems, whose purpose is to record and vivify the trauma experienced by the Hmong people during the Secret War in Laos of the 1960s and 1970s.

Washington, D.C., September 23, 2021 - The Taliban will not – and perhaps cannot – contain al Qaeda, despite hopeful United States government assurances that the Taliban will be an effective counterterrorism partner.

Washington, D.C., August 19, 2021 – The U.S. government under four presidents misled the American people for nearly two decades about progress in Afghanistan, while hiding the inconvenient facts about ongoing failures inside confidential channels, according to declassified documents published today by the National Security Archive.