Insurgency is a form of warfare as old as war itself, and insurgencies and their countering provide some of the most difficult challenges in the current strategic and operational environments. This course provides an introduction to insurgencies across time and place, and will introduce students as well to the theoretical literature of both insurgency and guerrilla warfare, and of counterinsurgency and counter-revolutionary warfare. It will conclude with consideration of the complex environments created by what some have described as a 'global insurgency' waged by extremist jihadism against the West.