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Foreign Policy

Treaty of Portsmouth signed, ending the Russo–Japanese War

Delegates from the Russian Empire and the Empire of Japan signed the Treaty of Portsmouth on September 5, 1905, concluding the Russo–Japanese War after U.S.-mediated negotiations held at Portsmouth, New Hampshire.

Treaty of Portsmouth signed, ending the Russo–Japanese War

The treaty ended a major international conflict, elevated the United States' role as a global mediator (earning Roosevelt international acclaim and leading to his 1906 Nobel Peace Prize), and reshaped power dynamics in East Asia.

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