The comparison of Stalinism and Nazism, which was conducted on a theoretical basis by political scientists during the Cold War, is now approached on the basis of empirical research, since greater information is available.
However, it remains a neglected field of academic study.
The first group targeted were Soviet Germans, between September 1941 and February 1942, 900,000 people – over 70 percent of the entire Soviet German community – were deported to Kazakhstan and Siberia in mass operations.
A second wave of mass deportations took place between November 1943 and May 1944 in which Soviet authorities expelled six ethnic groups (the Balkars, Chechens, Crimean Tartars, Ingush, Karachai, and Kalmyks) that numbered 900,000.
There were nevertheless substantial differences between the two regimes' approaches.