Cold Case Cuba: The Oswald Warnings We Ignored

Declassified memos from both sides of the Florida Straits show Havana tried to sound the alarm about Oswald-and the U.S. buried it.

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🌴 The Havana Backchannel

While Lee Harvey Oswald’s trip to Mexico City in September 1963 has drawn intense scrutiny, less attention has been paid to the Cuban response to that visit.

The 2025 CIA and State Department releases show that Cuban intelligence flagged Oswald as “unstable and hostile”-and that warning made it into the hands of U.S. officials.

They just didn’t act on it.

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📁 File: “Comportamiento Errático – Oswald” (DGI Internal Memo)

Dated October 9, 1963, this document from Cuba’s Dirección General de Inteligencia (DGI) described Oswald’s behavior at the Cuban consulate in Mexico City:

• He was “erratic and aggressive”
• Demanded a visa “with urgency”
• Mentioned “taking matters into [his] own hands” if rejected

The memo was quietly passed via a Brazilian intermediary to a U.S. consular contact in Havana.

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🧠 U.S. Response? Redacted and Discarded

A 2025-declassified State Department cable from Havana to Langley includes the notation:

“Received Cuban comm. re: Oswald. Dismissed as diversionary misinfo attempt. No further action.”

No follow-up.

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🕵️ A KGB Intercept

The 2025 dump also included Soviet internal communications showing that Cuban embassy staff in Moscow contacted Soviet intelligence about Oswald after the assassination, saying:

“This is the same man we reported. He was not stable. He mentioned actions against Kennedy.”

Soviet officials advised them to stay silent, per the cable:

“The Americans will not thank you for the truth now. This is their fiction to manage.”

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🎙️ CIA Mexico Station Memo: “Oswald and the Red Triangle”

A memo from the CIA station in Mexico City, now unredacted, includes a hand-scrawled postscript:

“Red triangle file [Oswald] tagged by Cuban consul Alvarez. Labeled potential ‘American agitator.’”

This memo was buried in an unrelated Latin America folder-until now.

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🔚 Warnings Came-But the Narrative Was Already Written

Cuba warned us.

They tried to alert the U.S. government about Oswald’s instability and his violent ideation.

But the response wasn’t to investigate.

It was to bury the warnings and preserve the pre-written “lone nut” narrative.

The 2025 files reveal:

The truth crossed borders. The cover-up stopped it cold.