Today Iran is once again in the headlines. Reputed to be developing nuclear weapons, the future of Iraq's next-door neighbor is a matter of grave concern both for the stability of the region and for the safety of the global community. President George W. Bush labeled it part of the "Axis of Evil," and rails against the country's authoritarian leadership. Yet as Bush trumpets the spread of democracy throughout the Middle East, few note that Iran has one of the longest-running experiences with democracy in the region.

In this book, Ali Gheissari and Vali Nasr look at the political history...