Recurrent visiting professor, Central European University, Budapest. Main research interests: history of empires and nationalism, memory politics, history of ideas. He gave lectures in many universities: Harvard, Columbia, Berkeley, Stanford, Maryland, West Point, Penn, Munich, Berlin (Humboldt and Free), Cologne, Paris (EHESS), Aix-en-Provence, London (SSEES), Manchester, Edinburgh, Geneva, Basel, Warsaw, Cracow Universities, and many universities in Russia and the post-Soviet countries, including Vilnius, Tartu, Kiev, Lviv, Almaty, Bishkek. Over 200 publications. Author of 8 monographs and editor of 20 collective volumes. Recent books: Nationalizing Empires (2015); Nation or the Might of the Myth (2016).