Mykhailo Hrushevskyi Chair in Ukrainian History at Harvard University, since 2013 - Director of the Harvard Ukrainian Research Institute.
Studies early modern and modern Ukrainian history and history of Eastern Europe, problems of intellectual history, and history of religions. Latest book: "The Last Empire. The Final Days Of The Soviet Union" (2014).
The Cossack Myth: History and Nationhood in the Age of EmpiresCambridge University Press (2012);
Yalta: The Price of Peace Viking/Penguin (2010; 2011);
Ukraine and Russia: Representations of the Past University of Toronto Press (2008);
The Origins of the Slavic Nations: Premodern Identities in Russia, Ukraine and Belarus Cambridge University Press (2006);
Unmaking Imperial Russia: Mykhailo Hrushevsky and the Writing of Ukrainian History University of Toronto Press (2005);
Religion and Nation in Modern Ukraine (with Frank E. Sysyn) Canadian Institute of Ukrainian Studies Press (2003);
Tsars and Cossacks: A Study in Iconography Harvard Ukrainian Research Institute/Harvard University Press (2002);
The Cossacks and Religion in Early Modern Ukraine Oxford University Press (2001; 2004).