What did the declassified documents reveal?

Air Counteraction Against Targets in Manchuria – a declassified United States intelligence report dated around November twenty‑first, nineteen‑fifty, held in the National Security Agency archives and now available through The Black Vault. This document was released under the Freedom of Information Act. The declassification authority was the Director of National Intelligence, and the material was made public on the archive site of The Black Vault, which hosts the full text of the report. Air Counteraction Against Targets in Manchuria ( “Hot Pursuit”) The question of air counteraction against targets in Manchuria first arose in the early part of November when hostile planes operating from bases west of the Yalu River were appearing in increasing numbers. On November seventh the Commander in Chief, Far East, stated that the present restrictions imposed on this area of operations provided a complete sanctuary for hostile air upon their crossing of the Manchurian border. He further stated that unless corrective measures were promptly taken this factor could assume decisive proportions. He requested instructions for dealing with this new threat. In reply to this request the Joint Chiefs of Staff stated that this situation and the urgent necessity for corrective measures was being presented for highest United States consideration. Discussions took place between the Departments of Defense and State and on November thirteenth, nineteen‑fifty the Department of State transmitted telegrams to London, Canberra, Ottawa and Paris requesting that the respective governments be informed “that it may be necessary at an early date to permit United Nations aircraft to defend themselves in the airspace over the Yalu River to the extent of permitting hot pursuit of attacking enemy aircraft up to two or three minutes flying time into Manchurian airspace” and that it was contemplated that United Nations aircraft would “limit themselves to repelling enemy aircraft engaged in offensive missions into Korea.” While the concurrence of these governments was not sought the Department felt it important that the respective governments be notified of the problem in view of its importance. The Department requested the United States embassies in the respective countries to report the reactions of the governments. The reaction of the respective governments – the United Kingdom, Canada, the Netherlands, France and Australia – was unfavorable. On November fourteenth the Canadian and Australian delegations approached United Nations Command under instructions to raise certain questions regarding our approach on “hot pursuit,” and United Nations Command stated many delegations in New York were genuinely concerned lest unilateral military actions by the United States might precipitate an extension of hostilities. United Nations Command particularly raised the questions of whether we would hold consultations prior to undertaking any military action over Manchuria, and whether the United…

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-001Declassified

Filed OCT 28 · 2026Runtime 1 min

NSA Air Counteraction Against Targets In Manchuria – A Declassified United States

U.S. public record · FOIAUpdated October 28, 2026

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Air Counteraction Against Targets in Manchuria – a declassified United States intelligence report dated around November twenty‑first, nineteen‑fifty, held in the National Security Agency archives and now available through The Black Vault. This document was released under the Freedom of Information Act.

Date: OCT 28 · 2026
Release: Declassified · U.S. public record (FOIA)
Source document: View the primary source document

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What was NSA Air Counteraction Against Targets In Manchuria – A Declassified United States about?: Air Counteraction Against Targets in Manchuria – a declassified United States intelligence report dated around November twenty‑first, nineteen‑fifty, held in the National Security Agency archives and now available through The Black Vault. This document was released under the Freedom of Information Act.
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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NSA Air Counteraction Against Targets In Manchuria – A Declassified United States

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