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Jeffery’s research is solid. He reveals how MI6’s methods shaped modern intelligence gathering.
#Intelligence #Research #SpyingMethods
https://thisgrandpablogs.com/secret-history-of-mi6-book-review/
Secret History of MI6: A Gripping Look Inside British Intelligence

Secret History of MI6 explores British spy operations from 1909–1949 in this gripping, authorized account by Keith Jeffery.

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