James Ryan is Senior Lecturer in Modern European (Russian) History at Cardiff University, UK. He is the author of Lenin's Terror: The Ideological Origins of Early Soviet State Violence (2012), and his articles have appeared in journals such as Slavic Review, Europe-Asia Studies, and Historical Research.

Susan Grant is Reader in Modern European History at Liverpool John Moores University, UK. She is the author of Physical Culture and Sport in Soviet Society (2013), and articles in journals such as the American Journal of Public Health, Medical History, and Revolutionary Russia.