This article addresses migration-security nexus in the EU by assessing Member States' national security and defence strategies as well as the 2016 EUGS in a time of migration crisis, a crisis that stands as one of the most important geopolitical challenges today in the EU. After developing and applying a framework for analysis derived from a literature review, the existing differences among Member States are clear in terms of strategic cultures and approaches to migration issues. The idea of 'EU'rope without internal borders is at stake as Schengen is under serious attack due to increasing Eurocentrism and growing extreme right-wing populism, which are a consequence of increasing economic protectionism and international terrorism. The solution seems to depend on two critical uncertainties: the evolution of political and social instability in the North Africa and the Middle East, and the future of the EU itself. The results enlighten a securitization of migration mostly centred on the nation-state and national security rather than on people and human security.