This book explores in a comparative perspective two fundamentalist waves that have rolled over the Middle East during the last two decades. Jewish and Muslim extremism have had a profound impact on the culture and politics of this important region. One thinks immediately of the Guh Emunism settlements on the West Bank, the Iranian revolution, and the assassination of President Sadat. The authors highlight various facets of the phenomena, such as Haradi Jewish ultra-orthodoxy, the transformation of secular Israeli nationalism by the Gush, Iranian attempts to spread the revolutionary gospel to the Sunni world, and fundamentalism as the spearhead of the national uprising in the Gaza. The introduction outlines what the extremist movements in both religions have in common, where they diverge, and how they are shaping the future of the Middle East.