Espionage history: everything you wanted to know
HistoryExtra podcast
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Will the Identities of Most Successful Spies Always Be a Secret?
Will the identities of most successful spies always remain a secret, or are they eventually always revealed by history? There's no hard and fast rule. But the bigger ones tend to sneak out. The great thing about conspiracy theories is you can never effectively prove them or disprove them.
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