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Stimson Doctrine declared: U.S. nonrecognition of Manchukuo

Secretary of State Henry L. Stimson issued a formal note on behalf of the Hoover administration declaring the United States would not recognize the Japanese-created state of Manchukuo in Manchuria.

Stimson Doctrine declared: U.S. nonrecognition of Manchukuo

The doctrine established a key precedent of U.S. nonrecognition of territorial changes executed by force and shaped American diplomatic response to Japanese aggression in East Asia.

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