Robert Frost was educated at the universities of St Andrews, Cracow, and London. After teaching for eighteen years at King's College London, he moved in 2004 to the University of Aberdeen, where he currently holds the Burnett Fletcher Chair in History. He is interested in the history of eastern and northern Europe from the fourteenth to the nineteenth centuries. His principal research interests are in the history of Poland-Lithuania, and in the history of warfare in the early modern period.