This chapter traces how migration has become a key priority in the EU's external relations with neighbouring states subsumed under the European Neighbourhood Policy (ENP). Looking at the EU's external migration agenda vis-à-vis southern and eastern neighbours, the chapter seeks to provide a robust overview of the policy evolution and the related academic debates. In terms of structure, it starts by outlining the EU's objective and policy instruments in the neighbourhood. This is followed by an investigation of the reaction of ENP countries and the political dynamics in the EU's eastern and southern neighbourhoods.