The Henry Lewis Stimson Doctrine was a 1932 United States policy of non-recognition of international territorial changes executed by force. It was named after Secretary of State Henry Stimson and announced in response to Japan unilaterally seizing Manchuria from China in 1931. The doctrine held that the US would not acknowledge territorial gains made through military force and remained US policy regarding the Soviet annexation of the Baltic states until they regained independence in 1991. While the doctrine aimed to maintain open access to China, it had little practical impact and failed to deter Japan, which continued its aggression.