Drawing on the Global terrorism Database, I have drawn a network of terrorist organisations having acted on French soil since 1970. The graph above is a two-mode network Organisations x Type of Terrorist Act. The Size of each organisation corresponds to the number of terrorist acts committed, and the size of links corresponds to the number of acts of specific types. A few interesting things: Islamist groups haven’t been the the most active. Corsican independence groups clearly outweigh all others over the whole period, and in the 1980s in particular (the most violent decade in terms of terrorism until now) other groups stand out: Action Directe (Radical Left) and Asala (Armenian group aimed to pressure the Turkish government into recognizing the Armenian genocide).