What did the declassified documents reveal?

This is a declassified Central Intelligence Agency Current Intelligence Bulletin on the Formosa Straits, dated April thirtieth, nineteen fifty‑five. The bulletin is notable because it offers contemporaneous intelligence on Chinese Communist naval strength and activity in the Taiwan Strait during the early Cold War, a period when the United States was closely monitoring the security of the island of Formosa. The document was declassified by the Central Intelligence Agency and released to the public in two thousand two through The Black Vault archive. The release is available at archive dot org slash download slash us‑china‑intel‑C I 0 1 2 slash C I 0 1 2 d j v u dot txt. Current Intelligence Bulletin Document No. — [Top Secret code word excised] Classified as Top Secret, changed to: T S S C Next review date: two thousand — [date redacted] Auth: H R 7 O‑2 Date: August twenty‑first, nineteen fifty‑five Reviewer: Office of Current Intelligence, Central Intelligence Agency Report of the I A C Current Intelligence Group for the Formosa Straits Problem “This report is based on information received in Washington up to eleven hundred hours, twenty‑ninth of April, nineteen fifty‑five. 1. Chinese Communist submarine strength has increased from five to seven submarines. The two additions, first observed in March, nineteen fifty‑five, are both Soviet long‑range types. The five boats previously accepted were two long‑range types and three short‑range types; one of the latter is believed non‑operational. These seven boats, representing transfers from the Soviets, are based at Tsingtao and are believed manned by Chinese crews. The six operational boats have the capability of conducting war patrols in the China coastal area. 2. The presence of a Communist patrol

Why was this case declassified?

This material entered the public record through the U.S. declassification and Freedom of Information Act (FOIA) process. The originating source document is linked on this page so the citation chain is auditable.

Case File · ARCHIVE-386Declassified

Filed SEP 25 · 2026Runtime 1 min

Central Intelligence Agency Current Intelligence Bulletin On The Formosa

U.S. public record · FOIAUpdated September 25, 2026

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◆ BLUF — The short version

This is a declassified Central Intelligence Agency Current Intelligence Bulletin on the Formosa Straits, dated April thirtieth, nineteen fifty‑five. The bulletin is notable because it offers contemporaneous intelligence on Chinese Communist naval strength and activity in the Taiwan Strait during the early Cold War, a period when the United States was closely monitoring the security of the island of Formosa.

Date: SEP 25 · 2026
Release: Declassified · U.S. public record (FOIA)
Source document: View the primary source document

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What was Central Intelligence Agency Current Intelligence Bulletin On The Formosa about?: This is a declassified Central Intelligence Agency Current Intelligence Bulletin on the Formosa Straits, dated April thirtieth, nineteen fifty‑five. The bulletin is notable because it offers contemporaneous intelligence on Chinese Communist naval strength and activity in the Taiwan Strait during the early Cold War, a period when the United States was closely monitoring the security of the island of Formosa.
Why was this case declassified?: This material entered the public record through the U.S. declassification and Freedom of Information Act (FOIA) process. Storyflo narrates it directly from the public release.

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Central Intelligence Agency Current Intelligence Bulletin On The Formosa

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