Since 9/11 many books have been published on Islamic terrorism, but few of these have considered the issue from the perspective of strategic studies or in terms of an "insurgency." As a result, much of this literature ignores the process of radicalisation and fails to ascertain why some people turn to terrorism, while others from the same background do not. To counter this trend, Explaining Islamist Insurgencies explains how and why the process of Islamist radicalisation is an important step towards acts of terrorism and in the formation of terrorist organisations by focusing on Poso, a small