Michael Cook takes an in-depth, comparative look at political identity, social values, attitudes to warfare, views about the role of religion in various cultural domains, and conceptions of the polity. In all these fields he finds that the Islamic heritage offers richer resources for those engaged in current politics than either the Hindu or the Christian heritages. He uses this finding to explain the fact that, despite the existence of Hindu and Christian counterparts to some aspects of Islamism, the phenomenon as a whole is unique in the world today. The book also shows that fundamentalism--in the sense of a determination to return to the original sources of the religion--is politically more adaptive for Muslims than it is for Hindus or Christians. A sweeping comparative analysis by one of the world's leading scholars of premodern Islam, Ancient Religions, Modern Politics sheds important light on the relationship between the foundational texts of these three great religious traditions and the politics of their followers today.