John Brennan: References & Edit History
Article Contributors
Primary Contributors
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Jeff Wallenfeldt
Jeff Wallenfeldt was manager of Geography and History at Encyclopaedia Britannica.
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The Editors of Encyclopaedia Britannica
Encyclopaedia Britannica's editors oversee subject areas in which they have extensive knowledge, whether from years of experience gained by working on that content or via study for an advanced degree. They write new content and verify and edit content received from contributors.
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Article History
| Type | Description | Contributor | Date |
|---|---|---|---|
| Anniversary information added. | Sep 18, 2025 | ||
| Add new Web site: BBC Sounds - Profile - John Brennan. | Mar 10, 2025 | ||
| Add new Web site: PBS - FRONTLINE - John Brennan. | Jan 03, 2025 | ||
| Add new Web site: The University of Texas at Austin - The Intelligence Studies Project - John O. Brennan. | Nov 08, 2024 | ||
| Add new Web site: Central Intelligence Agency - An Interview with TTIC Director John Brennan (U). | Jun 12, 2024 | ||
| First paragraph modernization. | May 07, 2024 | ||
| Add new Web site: CNN - John Brennan Fast Facts. | Dec 19, 2023 | ||
| Add new Web site: Washington Speakers Bureau - John Brennan. | Oct 27, 2023 | ||
| Added the book Undaunted. | Oct 07, 2020 | ||
| Added his criticism of Pres. Donald Trump and that Trump revoked his security clearance. | Aug 16, 2018 | ||
| Closed out his term as head of the CIA. | Jan 24, 2017 | ||
| Added photograph. | May 29, 2015 | ||
| Add new Web site: Central Intelligence Agency - Biography of John O. Brennan. | Jun 30, 2014 | ||
| New article added. | Jun 03, 2013 |
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