is a professor of East European history at Friedrich-Schiller-Universität Jena and one of the directors of the Imre Kertész Kolleg. His research interests include the history of state-building and nationalism, political violence during socialist rule and museums and exhibitions in Central and Eastern Europe. More recent publications include Ostmitteleuropa im 19. und 20. Jahrhundert (München: Oldenbourg, 2010), Catastrophe and Utopia. Jewish Intellectuals in Central and Eastern Europe in the 1930s and 1940s, eds. Ferenc Laczó and Joachim von Puttkamer (München: de Gruyter/Oldenbourg, 2017), and From Revolution to Uncertainty. The Year 1990 in Central and Eastern Europe, eds. Wlodzimierz Borodziej, Stanislav Holubec and Joachim von Puttkamer (London: Routledge, forthcoming in 2019).