Background of the occupation of the Baltic states

Part of a series of articles on the
Occupation of the Baltic states
Baltic states Nazi Germany Soviet Union
Background Baltic–Soviet relations Non-aggression pacts Soviet–Estonian Soviet–Latvian Soviet–Lithuanian German–Estonian German–Latvian German–Lithuanian Molotov–Ribbentrop Pact
Soviet occupation in 1940 Mutual Assistance Treaties Soviet–Estonian Soviet-Latvian Soviet-Lithuanian Orzeł incident Ultimata to Estonia to Latvia to Lithuania People's Parliament Sovietization Deportations from Estonia from Latvia from Lithuania June deportation Welles Declaration
German occupation Estonia Occupation Resistance Holocaust Latvia Occupation Resistance Holocaust Lithuania Occupation Resistance Holocaust
Soviet re-occupation in 1944 Battle of Narva Baltic offensive Courland Pocket Guerrilla war in the Baltic states Latvian partisans Lithuanian partisans
Under Soviet rule Guerrilla war in the Baltic states Operation Priboi Operation Jungle Estonian SSR Latvian SSR Lithuanian SSR Territorial changes Baltic Way Singing Revolution Sąjūdis Tautas fronte Rahvarinne Congress of Estonia
State continuity Baltic diplomatic services (1940–91) Estonian Latvian Lithuanian Kersten Committee Helsinki Accords
Aftermath Estonia–Russia relations Latvia–Russia relations Lithuania–Russia relations Russians in Estonia Russians in Latvia Russians in Lithuania
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The background of the occupation of the Baltic states covers the period before the first Soviet occupation on 14 June 1940, stretching from independence in 1918 to the Soviet ultimatums in 1939–1940. Lithuania, Latvia, and Estonia gained independence in the aftermath of the Russian revolutions of 1917 and the German occupation which in the Baltic countries lasted until the end of World War I in November 1918. All three countries signed non-aggression treaties with the Soviet Union in the 1920s and 1930s. Despite the treaties, in the aftermath of the 1939 German–Soviet pact, Estonia, Latvia and Lithuania were occupied, and thereafter forcibly incorporated into the Soviet Union, in 1940.