The attacks of September 11, 2001, highlight the general absence of attention to religion in international scholarship. The absence is understandable, for it arises from the secularized nature of the authority structure of the international system, described here as the “Westphalian synthesis.” Over the past generation, though, the global rise of public religion has challenged several planks of the synthesis. The sharpest challenge is “radical Islamic revivalism,” a political theology that has its roots in the early twentieth century and that gave rise to al-Qaeda. If international relations scholars are to understand the events of September 11, they ought to devote more attention to the way in which radical Islamic revivalism and public religion shape international relations, sometimes in dramatic ways.
