The Soviet Union occupied and annexed the three Baltic republics in 1940, an act most Western governments never formally recognized. German occupation followed in 1941–44, after which the Red Army reoccupied the territories and Soviet rule was reimposed. Soviet security services deported tens of thousands of people—often entire families of suspected nationalists, wealthier farmers ('kulaks'), or wartime partisans and their supporters—to Siberia and Central Asia, most notably in the June 1941 deportations and the March 1949 Operation Priboi tied to agricultural collectivization. Tens of thousands more fled west as refugees in 1944 ahead of the returning Red Army. The Baltic states regained independence in 1991.
The Soviet Union annexed Estonia, Latvia and Lithuania in 1940 under the Molotov-Ribbentrop Pact, reoccupied them in 1944 after German withdrawal, and deported tens of thousands accused of nationalism, wealth, or wartime collaboration to Siberia and Central Asia in 1941 and again in 1949.
National censuses and estimates for 1939-40 give about 1.05 million in Estonia, 1.99 million in Latvia and 2.93 million in Lithuania, the last swollen by the return of Vilnius in 1939.
State research bodies in the three countries — Estonia's International Commission for the Investigation of Crimes Against Humanity, Latvia's state historians and Lithuania's Genocide and Resistance Research Centre — record roughly 10,000 deported from Estonia in June 1941 and 20,700 more in March 1949, with comparable operations in Latvia and much larger ones in Lithuania, and count deaths in exile, in Gulag camps and by execution in the tens of thousands; the higher end also folds in those killed in the anti-Soviet partisan war of 1944-53. Russia has never recognised the deportations as a crime and disputes these framings.
Estonian, Latvian and Lithuanian state history commissions and the Estonian court judgements against MGB officers documented mass arrest and deportation without trial, assignment to compulsory labour in Siberian special settlements and camps, executions of resisters and their supporters, and torture during NKVD/MGB interrogation.
Latvia, Russia, Lithuania, Kazakhstan