Sari Hanafi is Professor of Sociology at the American University of Beirut and editor of Idafat: the Arab Journal of Sociology (Arabic). He is a member of the Executive Bureau of the International Association of Sociology and the Arab Council of Social Science. He is the author of numerous journal articles and book chapters on the political and economic sociology of the Palestinian diaspora and refugees; sociology of migration; politics of scientific research; and transitional justice. Leila Hilal is Director of the Middle East Task Force at the New America Foundation. She focuses on Syria, the Israeli-Palestinian conflict and issues related to U.S. foreign policy, community-based change, constitution-making, and transitional justice in the broader Middle East and North Africa. Prior to joining New America Hilal served as Senior Policy Adviser to the Commissioner-General of the Palestinian refugee agency (UNRWA) and as a legal adviser to Palestinian negotiators from 2002-2008. LexTakkenberg has worked in various field and headquarters positions with UNRWA since 1989, and is currently based in Amman where he occupies the post of Chief, Ethics Office at UNRWA Headquarters. Before joining UNRWA, he was the Legal Officer of the Dutch Refugee Council.