Robert Haug is Associate Professor of History at the McMicken College of Arts and Sciences, University of Cincinnati, where he also runs the Middle East Studies programme. He received his PhD from the University of Michigan and has published in peer-reviewed journals and edited collections on medieval frontier regions.
The book is not only about an important problem in the history of empire, but also a very useful introduction into the history of this region ... This is an important book, a contribution to the revision of the view of caliphate as well as other empires as monolithic structures. * Der Islam *