'This is a fascinating explanation of what seems, in retrospect, to be a very hard-to-understand wave of transnational terrorism - the revolutionary terrorist groups that operated in multiple advanced industrial countries in the 1970s and 80s. Sánchez-Cuenca handles multiple methods with a rare combination of creativity and common sense, making notable progress on the difficult problem of how to understand the interactive effects of ideology, historical legacies, and transnational shocks on political violence.' James Fearon, Stanford University, California

'This book is about the causes of leftwing terrorism in the developed world, but this is not all. It goes beyond the conventional narratives focused on the radicalization processes sparked by May '68 by digging deep into history to carve out the different long-term development paths that broadly influenced political conflicts in the western world. Sánchez-Cuenca's book reads like a mystery, in which the shocking discovery of the culprit opens extraordinary new avenues for further research about the determinants of violence in our societies.' Luis De La Calle, Centro de Investigación y Docencia Económicas, Mexico

'In summary, this book is truly a tour de force, highly recommended for experts on the matter and for those who wonder about the crossover between the right methodology to analyse long term processes, ideas, culture, institutions and specific facts that give results where luck and the individual and collective actions are also involved.' Carmen Lopez Alonso, Revista Española de Investigaciones Sociológicas