His expertise lies in the Bronze and Iron Age cultures of the Eastern Mediterranean, with special emphasis on those of the Ancient Levant. Among the topics that he has studied are: ancient trade; metallurgy; pottery production and provenance; scientific applications in archaeology; archaeological survey; the archaeology of Jerusalem; the Middle Bronze Age of the Levant; chronology of the 2nd Millennium BCE; the Sea Peoples and the Philistines; relations between Egypt and the Levant; ancient weapons and warfare; ancient cult and religion.