What did the declassified documents reveal?

Declassified. This is a declassified Central Intelligence Agency memorandum from September nineteenth, nineteen-sixty, providing an intelligence assessment of the economic aspects of the departure of Soviet technicians from Communist China. This document is available at documents2.theblackvault.com. This document was declassified by the Central Intelligence Agency under Freedom of Information Act case F-two-thousand-and-one dash zero-three-one-seven, on August twenty-seventh, two-thousand-and-one. Its release authority was the Assistant Director of Central Intelligence for Records and Access. The document, titled "Economic Aspects of the Departure of Soviet Technicians from Communist China," begins: "This memorandum was prepared in response to a recent verbal request for additional comment on the economic aspects of the current departure of Soviet technicians from Communist China. It sets forth O-R-R's (a) estimate of the current status of Soviet technicians in Communist China, and (b) analysis of reasons for the recently reported departure of these technicians in unusually large numbers. a. The Current Status of Soviet Technicians in Communist China. Reliable observers in Peiping have confirmed that an unusually large number of Soviet citizens left Peiping by train for the U-S-S-R during August nineteen-sixty; some were economic technicians who left before the end of their scheduled tour of duty. It is difficult to go beyond this general statement from currently available information. It is unknown how many of the departures were economic technicians, and how many were Soviet citizens on other business, such as entertainers, teachers, trade officials, and military advisers. The scale of the movement is unclear. Reported estimates range from three hundred and fifty technicians, plus dependents, to several thousands, presumably including dependents. Late in August, [three lines redacted under exemption B1] estimated that a minimum of "something over one thousand Soviet" left in the previous four weeks and that departures were continuing. It is known that some additional technicians are still coming into China from the U-S-S-R. O-R-R had tentatively estimated before the exodus that there were one thousand to two thousand Soviet technicians in China. A key question is whether technicians who left unexpectedly did so at the unilateral request of either the U-S-S-R or Communist China, [five lines redacted under exemption B1] or as a result of a joint [one line redacted under exemption B1] that their services were no longer essential. [one paragraph redacted under exemption B1] Whether this carefully correct procedure was still being followed in July and August, after the Sino-Soviet political relationship worsened, is unknown. [three lines redacted under exemption B1] b. Possible Reasons for the Exodus. Three hypotheses have been suggested to account for the exodus. One, the U-S-S-R may have been trying to discipline or warn Communist China by…

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-375Declassified

Filed SEP 17 · 2026Runtime 1 min

Central Intelligence Agency Memorandum From September Nineteenth

U.S. public record · FOIAUpdated September 17, 2026

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◆ BLUF — The short version

Declassified. This is a declassified Central Intelligence Agency memorandum from September nineteenth, nineteen-sixty, providing an intelligence assessment of the economic aspects of the departure of Soviet technicians from Communist China. com. This document was declassified by the Central Intelligence Agency under Freedom of Information Act case F-two-thousand-and-one dash zero-three-one-seven, on August twenty-seventh, two-thousand-and-one.

Date: SEP 17 · 2026
Release: Declassified · U.S. public record (FOIA)
Source document: View the primary source document

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What was Central Intelligence Agency Memorandum From September Nineteenth about?: Declassified. This is a declassified Central Intelligence Agency memorandum from September nineteenth, nineteen-sixty, providing an intelligence assessment of the economic aspects of the departure of Soviet technicians from Communist China. com. This document was declassified by the Central Intelligence Agency under Freedom of Information Act case F-two-thousand-and-one dash zero-three-one-seven, on August twenty-seventh, two-thousand-and-one.
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 Memorandum From September Nineteenth

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