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The Central Intelligence Agency (CIA) is an independent US Government agency responsible for providing national security intelligence to senior US policymakers.
For more on the Agency's mission, visit our Strategic Intent.
Words of Estimative Probability
The First Year of the Office of National Estimates: The Directorship of William L. Langer
The Summit Conference of 1960: An Intelligence Officer's View
A Crucial Estimate Relived
The Cuban Missile Crisis of 1962: Presenting the Photographic Evidence Abroad
Glossary of Abbreviations