Estonian Diplomatic Service (1940–1991)

Estonia was occupied on 17 June 1940, by Red Army troops and was forcibly incorporated into the Soviet Union on 6 August 1940. The United States never recognized the illegal annexation of the three Baltic countries – Estonia, Latvia, and Lithuania – in conformity with the principles of the Stimson Doctrine (US Under Secretary of State Sumner Welles's Declaration of July 23, 1940), and more than 50 countries followed this position.

Source: Wikipedia — Estonian Diplomatic Service (1940–1991) (CC BY-SA 4.0)