The article presents an analysis of the problem of the typology of political organizations in the Russian emigration, understanding the issue of the nature and specifics of political extremism in the Russian emigration. The focus is on the history of the NTS, the most famous emigrant organization of the Cold War era. It is shown that the problem of the typology of political organizations in the Russian Diaspora is one of the most controversial topics in historiography. The authors argue that elements of extremism were characteristic of the NTS both in the 1930s and after the Second World War.