From 2006-9 the foundation director of the International Migration Institute (IMI) at the University of Oxford. He is a sociologist and political economist, and works on international migration dynamics, global governance, migration and development, and migration trends in Africa, Asia and Europe. Stephen Castles’ recent books include: The Age of Migration: International Population Movements in the Modern World (Fifth Edition, with Hein de Haas and Mark Miller, Basingstoke, Palgrave-Macmillan, and New York, Guilford, 2014); and Migration, Citizenship and Identity: Selected Essays (Cheltenham UK and Northampton, Mass. USA, Edward Elgar Publishing, 2017).