In The New Threat renowned expert and prize-winning reporter Jason Burke provides the clearest and most comprehensive guide to Islamic militancy today.

From Syria to Somalia, from Libya to Indonesia, from Yemen to the capitals of Europe, Islamic militancy appears stronger, more widespread and more threatening than ever. ISIS and other groups, such as Boko Haram, together command significant military power, rule millions and control extensive territories. Elsewhere Al-Qaeda remains potent and is rapidly evolving. Factions and subsidiaries proliferate worldwide, and a new generation of Western Jihadists are emerging, joining conflicts abroad and attacking at home.

Who are these groups and what do they actually want? What connects them and how do they differ? How are we to understand their tactics of grotesque violence and online activism?