The Nazi-Soviet Pact of 23 August 1939, contained secret protocols outlining spheres of interest. Finland and the Baltic states, as well as eastern Poland, fell into the Soviet sphere. After invading Poland on 17 September 1939, on 30 November the Soviets invaded Finland. Then "the League of Nations for the first time expelled a member who had violated the Covenant." The League action of 14 December 1939, stung. "The Soviet Union was the only League member ever to suffer such an indignity."