Center for European Studies Department of Economics, Management and Statistics University of Milano – Bicocca Piazza Ateneo Nuovo 1 – 2016 Milan, Italy http://www.cefes‐dems.unimib.it/ CefES‐DEMS WORKING PAPER SERIES Political Regimes and the Determinants of Terrorism and Counter‐terrorism Nicola Brugali, Paolo Buonanno and Mario Gilli No. 384 – July 2018