Historian, Phd, DSc, chief director. He has published four books and two edited volumes, most recently Etnicitás, identitás, politika. Magyar kisebbségek nacionalizmus és regionalizmus között Romániában és Csehszlovákiában 1918-1944 [Ethnicity, identity, politics. Hungarian minoirties between nationalism and regionalism in Romania and Czechoslovakia 1918-1944] (Napvilág, Budapest, 2015), and numerous articles in specialist journals (incl. SlavicReview and EastCentral Europe), volumes and media outlets on topics of history and politics of identity. He was visiting lecturer at the University of Miskolc, at Stradins University, Riga and at ELTE Budapest, „Europa” Fellow of the New Europe College – Institue for Advanced Studies, Bucharest, visiting fellow at the Imre Kertész Kolleg, Jena and at IOS Regnesburg, Fulbright visiting reserach scholar at Stanford University, Center for Russian, East European and Eurasian Studies.
His primary research topic is history of minorities and nationalism in East-Central Europe from the 19th century, with a focus on interwar Transylvania and its regionalist political currents. In 2017 he received an ERC Consolidator grant for the project NEPOSTRANS – Negotiating post-imperial transitions: from remobilization to nation-state consolidation. A comparative study of local and regional transitions in post-Habsburg East and Central Europe.