Oleksandr Zaitsev is a professor at the Department of History, Ukrainian Catholic University in Lviv. His studies deal mainly with the political history of interwar Western Ukraine and the intellectual history of Ukrainian integral nationalism. He is the author of Ukrainian Integral Nationalism of the 1920s and 1930s: Essays in Intellectual History (2013), Nationalist in the Fascist Epoch: Dmytro Dontsov’s Lviv Period, 1922-1939. Towards an Intellectual Biography (2019), co-author and editor of Nationalism and Religion: the Greek-Catholic Church and Ukrainian Nationalist Movement in Galicia, 1920s – 1930s (2011), editor of Fascism and Right Radicalism on the East of Europe (special issue of the journal Ukraina Moderna, 2013), and co-editor of Ukrainian Radical Right in Past and Present: Studies in Ideology, Memory and Politics (special issue of the journal Communist and Post-Communist Studies, 2015). In 2014, he received the Annual Award for the Best Monograph in Ukrainian Studies from the Canadian Institute of Ukrainian Studies, University of Alberta.