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Historical allegation
Pearl Harbor foreknowledge claimsAtlas
Government & Politics · Military & defense secrecy
Competing accounts of whether U.S. leaders had actionable foreknowledge of the Pearl Harbor attack and permitted it, versus intelligence-failure and readiness-gap explanations.
Open the caseTimeline
- 1941-12-07 · eventAttack on Pearl Harbor
- 1941-12-07 · eventJapanese attack on Pearl Harbor
- 1942 · investigationEarly U.S. inquiries into responsibility and warnings
- 1944 · investigationArmy Pearl Harbor Board examines warnings and harbor security
- 1945 · investigationMajor wartime and immediate postwar Pearl Harbor investigations continue
- 1945 · investigationWartime and immediate postwar congressional investigations expand the record
- 1946 · investigationJoint congressional investigation of Pearl Harbor published in record
- 1960 · first_appearanceRevisionist foreknowledge books gain wider circulation
- 1990 · popularizationDocumentary and cable history programs recirculate allow-it claims
- 1999 · popularizationPublication of Stinnett’s Day of Deceit renews foreknowledge debate
- 2000 · mutationInternet archives mutate decrypt mosaics and counter-mosaics
- 2010 · amplificationGovernment publishing commentary revisits Pearl Harbor conspiracy claims
- 2020 · document_releaseNational Archives education features highlight Pearl Harbor primary sources