- HD 1080
- Runtime: 120m.
- Status: Released
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- Languages: en
- Country: United States of America
- Director: John Huston
- Stars: Bibi Andersson, Richard Boone, Nigel Green, Dean Jagger, Lila Kedrova
- keywords: based on novel or book, undercover agent, anonymous letter, double agent, female spy, moscow, russia, spy ring, spy thriller, kremlin, cold war era, international espionage
- Production_studio: 20th Century Fox
- Slogan: World War III... in an envelope!
- The The Kremlin Letter is featured in the top rankings of 1970
- #22 in Top Action Movies of 1970
- #27 in Top Thriller Movies of 1970
After an unauthorized letter suggesting U.S. support for a Russian attack on China is sent to Moscow, a former naval officer and his team go undercover to retrieve it. Their plans are disrupted when a cunning politician raids their hideout.
