Washington, D.C., October 1, 2026 - The CIA continues to keep secret major substantive portions of an internal accounting of its activities in Mexico, including information on covert operations target...

Washington, D.C., October 1, 2026 - The CIA continues to keep secret major substantive portions of an internal accounting of its activities in Mexico, including information on covert operations target...

Washington, D.C., October 1, 2026 - The CIA continues to keep secret major substantive portions of an internal accounting of its activities in Mexico, including information on covert operations target...

Washington, D.C., October 1, 2026 - The CIA continues to keep secret major substantive portions of an internal accounting of its activities in Mexico, including information on covert operations target...

Washington, D.C., October 1, 2026 - The CIA continues to keep secret major substantive portions of an internal accounting of its activities in Mexico, including information on covert operations target...

Washington, D.C., October 1, 2026 - The CIA continues to keep secret major substantive portions of an internal accounting of its activities in Mexico, including information on covert operations target...

An act of international terrorism on the streets of Washington, DC, still reverberates 50 years later.

Washington, D.C., September 21, 2026 - As part of a “major case” investigation into the role of General Augusto Pinochet in an act of terrorism in Washington, D.C., the FBI interviewed former secretar...

Washington, D.C., June 3, 2025 - The Trump administration’s intention to acquire Greenland, including possibly by force, has put a focus on the history of its strategic interest to U.S. policymakers. ...

Washington, D.C., September 17, 2026 - As U.S. officials prepared for the landmark 1997 Conference of Parties (COP) climate negotiations in Kyoto, Japan, they increasingly recognized a simple reality:...

TikTok video by National Security Archive

Washington, D.C., August 31, 2026 - The “fundamental reevaluation” that took place in the Kremlin under General Secretary Mikhail Gorbachev not only encompassed the political, ideological, and economi...

Washington, D.C., August 31, 2026 - The “fundamental reevaluation” that took place in the Kremlin under General Secretary Mikhail Gorbachev not only encompassed the political, ideological, and economi...

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Create an account or log in to Instagram - Share what you're into with the people who get you.

Secret SAC Movie Includes Dr. Strangelove-esque Dramatization of Nuclear Combat Operation. Declassified “Film Reports” Feature Effort to Clean Up 1966 Nuclear Bomber Crash in Spain, “Arc Light” Bombin...

TikTok video by National Security Archive

TikTok video by National Security Archive

Washington, D.C., July 22, 2016 - U.S. atomic tests in Bikini Atoll in July 1946 staged by a joint Army-Navy task force were the first atomic explosions since the bombings of Japan a year earlier. Doc...

New accounts show the oil and gas industry trying to weaken methane reporting while saving the federal emissions system it relies on.

The Energy Department tried to use a mass "still interested" notice to close older FOIA requests. A federal judge found the agency had no authority to do that.

Washington D.C., March 12, 2021 - The Defense Department finally replied to the National Security Archive’s September 2006 FOIA request early last year. After nearly 15 years of waiting, on January 24...

The Energy Department tried to use a mass "still interested" notice to close older FOIA requests. A federal judge found the agency had no authority to do that.

New accounts show the oil and gas industry trying to weaken methane reporting while saving the federal emissions system it relies on.

Washington, D.C., August 18, 2026 – The fossil fuel industry is trying to weaken methane reporting requirements while simultaneously fighting to preserve the related federal emissions database it reli...

New accounts show the oil and gas industry trying to weaken methane reporting while saving the federal emissions system it relies on.

Challenging government secrecy, informing the public debate through access to declassified documents, ensuring government accountability, and defending the right to know in the US and abroad.

Washington, D.C., August 8, 2024 – On the week of the 79th commemoration of the U.S. atomic bombings of Hiroshima and Nagasaki, Japan, the National Security Archive today publishes a fascinating new c...

YouTube video by nsarchive

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 pu...

TikTok video by National Security Archive

YouTube video by nsarchive

YouTube video by nsarchive

TikTok video by National Security Archive

YouTube video by nsarchive

Latest update: July 21, 2026

TikTok video by National Security Archive

YouTube video by nsarchive

TikTok video by National Security Archive

1 likes, 0 comments - natsecarchive on July 17, 2026: "CW: This video includes descriptions of CIA actions that violated and harmed humans and animals. In the 1960s, the CIA tried to use cats as spie...

Challenging government secrecy, informing the public debate through access to declassified documents, ensuring government accountability, and defending the right to know in the US and abroad.

Armando Fernández Larios ayudó a planear un ataque con coche bomba en Washington que mató a dos personas en 1976. Cincuenta años después, antiguos secretos del gobierno podrían decidir su destino.

Challenging government secrecy, informing the public debate through access to declassified documents, ensuring government accountability, and defending the right to know in the US and abroad.