The Soviet Union fought against the followers of a convicted terrorist and Nazi German collaborator Stepan Bandera in western Ukraine—first during World War II and then as an insurgency. As a result, many were tried and incarcerated in Kazakhstan, the Arctic Circle, and the Urals. Yet in 1955, Soviet leader Nikita Khrushchev pardoned and released Banderites in the tens of thousands. Why did this mass-scale amnesty happen, and what long-term consequences did it have?

This question is especially perplexing considering who Stepan Bandera was—a fascist leader of the terrorist OUN, Organization of Ukrainian Nationalists (faction B named after Bandera), established in 1929. During World War II, the organization collaborated with Nazi Germany since the area was under their occupation as Reichskommissariat Ukraine from mid-1941 to late 1944.