He obtained his Doctorate in Political Science at the European University Institute of Florence, Italy.
Before his present post, he was Tutorial Fellow at Magdalen College, Oxford.
A major theme of his research is the analysis of the causes and consequences of the strategies used by democratic governments to control extremist dissent.
His comparative analysis of inter-war Europe provided the material for several journal articles and a monograph entitled Defending Democracy (Johns Hopkins University Press 2005 [paperback 2007]).
[4] His current project, Reshaping Democracy after Authoritarianism, for which he has received funding from the British Academy, the Radcliffe Institute for Advanced Studies at Harvard University, the Research Development Fund of Oxford University, and the Nuffield Foundation, analyzes how European democracies have dealt with the political legacies of authoritarianism.