The Soviet Union began mass deportations of more than 90,000 "undesirable" people from the Baltic states to Siberia.

Operation Priboi was the code name for the biggest Stalin-era Soviet mass deportation from the Baltic states on 25–28 March 1949. Also known as the March deportation. More than 90,000 Estonians, Latvians and Lithuanians, labeled as "enemies of the state", were deported to forced settlements in inhospitable Siberian areas of the Soviet Union. Over 70% of the deportees were either women, or children under the age of 16.

The Baltic states or the Baltic countries is a geopolitical term encompassing Estonia, Latvia, and Lithuania. All three countries are members of NATO, the European Union, the Eurozone, and the OECD. The three sovereign states on the eastern coast of the Baltic Sea are sometimes referred to as the "Baltic nations", less often and in historical circumstances also as the "Baltic republics", the "Baltic lands", or simply the Baltics.

Siberia is an extensive geographical region comprising all of North Asia, from the Ural Mountains in the west to the Pacific Ocean in the east. It has formed a part of the sovereign territory of Russia and its predecessor states since the lengthy conquest of Siberia, which began with the fall of the Khanate of Sibir in 1582 and concluded with the annexation of Chukotka in 1778. Siberia is vast and sparsely populated, covering an area of over 13.1 million square kilometres (5,100,000 sq mi), but home to roughly a quarter of Russia's population. Novosibirsk, Krasnoyarsk, and Omsk are the largest cities in the area.