Leon Trotsky is attacked in Mexico City

The Soviet Politburo approved a proposal to execute thousands of Polish officers and prisoners held by the NKVD. The killings at Katyn and other sites were part of a broader effort to eliminate Polish...

The treaty ended the Winter War and transferred Finnish territory, including the Karelian Isthmus, to the Soviet Union. Soviet security demands gained territory but at high military and diplomatic...

Moscow demanded a new government and the entry of additional Soviet troops into Lithuania. Soviet pressure was followed by occupation and annexation, extinguishing Lithuanian independence. The episode...

Elections held under occupation offered voters a single approved list and were followed by petitions for incorporation into the Soviet Union. These procedures supplied a veneer of popular consent...

The USSR’s Supreme Soviet accepted Lithuania as a union republic after occupation and controlled elections. Soviet rule brought land nationalization, arrests, deportations, and the dismantling of...

The invasion opened a war of annihilation across Soviet territory. Stalin’s government had failed to prepare effectively despite warnings; civilians and soldiers endured occupation, mass killing,...

The emergency body concentrated wartime authority and coordinated the state, economy, and military. Soviet survival depended on the labor and sacrifice of diverse peoples, including workers, women,...

A State Defense Committee decision formalized the evacuation apparatus as German forces advanced. Hundreds of factories and millions of people were moved eastward under extraordinary pressure. This...

A decree collectively accused Soviet Germans of collaboration and ordered their deportation to Siberia and Central Asia. Families were uprooted and subjected to forced settlement and labor; collective...

The siege cut the city’s main land connections and subjected civilians to starvation, bombardment, cold, and disease. Stalin’s wartime leadership did not remove the immense human cost; Leningraders’...