David Morgan is Professor of History and Religious Studies in the Department of History, University of Wisconsin-Madison. He is the author of The Mongols (2nd edition, 2007) and Medieval Persia 1040–1797 (1988), and is General Editor of Cambridge Studies in Islamic Civilization. Anthony Reid is a Southeast Asian historian now again based at the ANU, Canberra, but previously at NUS in Singapore (2002–9) and UCLA in Los Angeles (1999–2002). His recent books include Southeast Asia in the Age of Commerce (2 vols, 1988–93), Charting the Shape of Early Modern Southeast Asia (1999), An Indonesian Frontier: Acehnese and Other Histories of Sumatra (2004), and Imperial Alchemy: Nationalism and Political Identity in Southeast Asia (1999).