What did the declassified documents reveal?

From vault.fbi.gov, this is a declassified Central Intelligence Agency record from April ninth, nineteen-sixty-two, titled The Decline of Mao Tse-tung. This document is notable for its early, speculative assessment of Mao's health and potential political future. This record was released to the public under the Freedom of Information Act in May two-thousand-seven, with redactions under exemptions E-O twelve-thousand-nine-hundred-fifty-eight, sections three point three B one and three point three B six, and six point two A four. This release was approved by the National Archives and Records Administration, A-A-R-O. The document opens: Office of Current Intelligence Central Intelligence. O-C-I number fifteen-oh-six-sixty-two. Copy number four-hundred-ninety-nine. Nine April nineteen-sixty-two. The Decline of Mao Tse-tung. Reference Title: Polo X-V-sixty-two. Current Intelligence Staff Study. This is a postscript to Polo X-I-V-sixty-one, "The Chinese Communist Leadership, nineteen-fifty-eight-nineteen-sixty-one." It recapitulates the evidence for the probability that Mao Tse-tung has been deteriorating in recent years, and for the possibility that he is suffering from a serious medical disorder which could soon lead to his death or retirement or overthrow. The paper speculates on the implications of this probable deterioration and possible illness for the Chinese Communist party and the Sino-Soviet relationship. An appendix provides a record of information bearing on Mao's health which has come to hand since nineteen-forty-five. The Sino-Soviet Studies Group would welcome comment on this paper, with respect either to the conclusions or to the record on which the conclusions are based. Comment should be addressed in this instance to the coordinator of the group, [four lines redacted under exemption B one]. Summary: There is good evidence that Mao Tse-tung has been deteriorating in recent years, if only in the sense of declining energies and abilities. Evidence of this kind includes his own statements about weakening powers and his own preparations for possible retirement; his generally unimpressive performances in speeches and interviews; the apparent sharp decline in his productivity; and the failure of the regime to publish anything of Mao's except brief remarks. There is also some evidence to suggest a specific medical disorder from which Mao might be suffering. Such evidence is consistent with a picture of either cerebral ischemia, insufficient flow of blood to the brain, or senile dementia, senility. The evidence for a serious degree of either disorder, however, is not impressive, and our ability to make a diagnosis on the available evidence is quite limited. The total evidence, both for deterioration and for a specific disorder, affects to some degree certain conclusions we have previously offered about Chinese Communist party affairs and the Sino-Soviet relationship. While we believe that Mao still dominates the Chinese party, the question…

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.

From Vault.fbi.gov, This Is A Declassified Central Intelligence Agency Record

◆ BLUF — The short version

gov, this is a declassified Central Intelligence Agency record from April ninth, nineteen-sixty-two, titled The Decline of Mao Tse-tung. This document is notable for its early, speculative assessment of Mao's health and potential political future.

Date: SEP 14 · 2026
Release: Declassified · U.S. public record (FOIA)
Source document: View the primary source document

↯ Dispatch — press play1:00

0:001:00

↯ Share

X in r/

Episode notes

From vault.fbi.gov, this is a declassified Central Intelligence Agency record from April ninth, nineteen-sixty-two, titled The Decline of Mao Tse-tung. This document is notable for its early, speculative assessment of Mao's health and potential political future. This record was released to the…

View the primary source document

Questions about this case

What was From Vault.fbi.gov, This Is A Declassified Central Intelligence Agency Record about?: gov, this is a declassified Central Intelligence Agency record from April ninth, nineteen-sixty-two, titled The Decline of Mao Tse-tung. This document is notable for its early, speculative assessment of Mao's health and potential political future.
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.

intelligence-vault

Related cases

✉ Dispatches

A short dispatch when a new file is released — narrated, answer-first, and linked straight to the primary source. No spam; unsubscribe anytime.

↯ Subscribe to the feed

RSS feed Browse all cases

From Vault.fbi.gov, This Is A Declassified Central Intelligence Agency Record

Questions about this case

Related cases

Army: United States Intelligence Memorandum Concerning The Far East Command’s

Army: Cable From General Headquarters, Far East Command, Regarding Royal Air Force

Central Intelligence Agency Intelligence Summary On Developments In China

United States Army Record Concerning A Reported Chinese Plan To Attack Indochina

Central Intelligence Agency Record Concerning Intelligence On A Possible

Questions about this case

Related cases

Army: United States Intelligence Memorandum Concerning The Far East Command’s

Army: Cable From General Headquarters, Far East Command, Regarding Royal Air Force

Central Intelligence Agency Intelligence Summary On Developments In China

United States Army Record Concerning A Reported Chinese Plan To Attack Indochina

Central Intelligence Agency Record Concerning Intelligence On A Possible

Get the next declassified case in your inbox