In September 2001, the Danish Ministry of Foreign Affairs commissioned a study of the present and potential links between migration and development. In January 2002, the new Danish Government announced a decision to enhance the links between its aid and refugee policies as part of the overall focus on poverty reduction. The present paper provides a state-of-the-art overview of current thinking and available evidence on the migrationdevelopment nexus, including the role of aid in migrant-producing areas. It offers evidence and conclusions around the following four critical issues:Poverty and migration, Conflicts, refugees, and migration, Migrants as a development resource, Aid and migration.