This collection of articles by Professor Bosworth contains a series of studies on the Arab-Persian heartland of the medieval Islamic world, from the Levant to Afghanistan and the borderlands with India. The emphasis is on historical, religious, cultural and literary aspects of the region's history, from pre-Islamic times to the medieval period. A number of the studies focus on the Arab caliphate and the successor dynasties that arose from it in the Iranian world, others focus on Muslim perceptions of other faiths in the Middle East and on the relations of the ruling Muslim institution with its non-Muslim minorities. One particular group is also concerned with the prolonged contacts and interaction between Islam and the Byzantine Empire.