Hebrew language & literature: history of Greek-speaking Judaism; Jewish-Christian relations; modern Jewish theology
- Directeur de Recherche Honoraire au CNRS, Paris, and Professor Emeritus, The Pontifical Institute of Medieval Studies, Toronto
The history of the Islamic world; the formation & development of traditional Islamic thought, & its implications in the modern world; Islamic thought, & its implications in the modern world; Islamic history in comparative perspective.
The History and Archaeology of the early Islamic Middle-East, North Africa and Spain c.600-1000 AD
Languages & civilisations of the Christian Near East (Armenian, Caucasian, Albanian, Coptic, Georgian); epigraphy. palaeography; Armenian history;