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Stimson Doctrine issued: U.S. nonrecognition of Manchukuo

Secretary of State Henry L. Stimson issued a formal note declaring that the United States would not recognize the legitimacy of the Japanese-established state of Manchukuo in Manchuria.

Stimson Doctrine issued: U.S. nonrecognition of Manchukuo

The doctrine established a U.S. policy of nonrecognition for territories acquired by force, signaling diplomatic opposition to Japanese aggression and setting a precedent in international law and U.S. foreign policy.

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