There have been three waves of studies on Iran after the Islamic Revolution. The initial series of studies debates the causes of the revolution. A second collection investigates the ideological and theological underpinnings of the Islamic Republic. Most recently, a set of monographs has begun to probe the praxis of the regime and the dynamics of post-revolutionary politics. Mehdi Moslem's Factional Politics in Post-Khomeini Iran is an insightful and thought-provoking contribution to this newer research agenda.