What did the declassified documents reveal?

This episode of Declassified presents a Central Intelligence Agency National Intelligence Estimate, dated August ninth, nineteen-sixty, titled "Sino-Soviet Relations." This document provides a contemporaneous assessment of the relationship between Communist China and the Soviet Union during the Cold War. You can find this record at documents2.theblackvault.com. This document was released under the Freedom of Information Act and subsequently declassified by the Central Intelligence Agency, with portions approved for release in May two-thousand-four. It offers a rare window into the American intelligence community's understanding of the Communist Bloc's internal dynamics. The document, National Intelligence Estimate number one-hundred-three-sixty, "Sino-Soviet Relations," begins with its stated "PROBLEM: To examine the Sino-Soviet relationship, and to estimate probable developments therein over the next five years." Under the heading "CONCLUSIONS," the document states: One. The growth of Communist China's power and self-confidence has brought to the Sino-Soviet relationship an increased Chinese assertiveness and a consequent sharp increase in discord, particularly concerning outlook and attitude toward the non-Communist world. There is still one cipher, faith, but there are as a consequence, the Sino-Soviet relationship is in process of difficult change. Paragraphs seven through nine. Two. The Sino-Soviet relationship is not a Communist monolith. Instead, it contains elements of both cohesion and division, and varying degrees of duality are displayed in the relations of the two powers in ideological, foreign policy, economic, and military affairs. Although the relationship is subject to many of the separatist forces that have traditionally confronted allies and coalitions. Paragraphs fifty-eight through ninety-three. Three. We believe that cohesive forces in the Sino-Soviet relationships will remain stronger than divisive forces at least through the period of this estimate. The strongest of the cohesive forces will be a mutual awareness of the heavy damage to their national interests and to the Communist cause which a substantial impairment of the alliance would inflict. The two partners will almost certainly continue to share a common hostility to the West and a belief that through their common effort in advancing international communism they can someday participate in dominating the world. Their relationship will also continue to find cohesion in the political, economic, and military advantages each receives. This will have particular force for the Chinese who, in view of their continuing military and economic dependence on the U-S-S-R, will probably feel that they have no genuinely acceptable alternative to maintaining their alliance with the Soviets. Paragraphs twelve through fourteen, and ninety-four through ninety-eight. Four. Divisive forces continue to be present, however, and may increase. Differing national interests and characteristics…

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.

CIA Sino Soviet Relations.

◆ BLUF — The short version

" This document provides a contemporaneous assessment of the relationship between Communist China and the Soviet Union during the Cold War. com. This document was released under the Freedom of Information Act and subsequently declassified by the Central Intelligence Agency, with portions approved for release in May two-thousand-four.

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

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This episode of Declassified presents a Central Intelligence Agency National Intelligence Estimate, dated August ninth, nineteen-sixty, titled "Sino-Soviet Relations." This document provides a contemporaneous assessment of the relationship between Communist China and the Soviet Union during the…

View the primary source document

Questions about this case

What was CIA Sino Soviet Relations. about?: " This document provides a contemporaneous assessment of the relationship between Communist China and the Soviet Union during the Cold War. com. This document was released under the Freedom of Information Act and subsequently declassified by the Central Intelligence Agency, with portions approved for release in May two-thousand-four.
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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