The issue of mass migration and north–south relations are increasingly becoming complicated in international relations. In the case of the interactions between Africa and Europe, irregular migration has become a major problem that is also breeding new forms of relations between the two continents. Migration into Europe through the western Mediterranean corridor from Morocco into Spain is a central part in the development of this new relationship. In these changing relations, it is important to ask how the security concerns of mass irregular migration, the emergence of diverse efforts to manage mass migration, and the forms of collaborations that have emerged between the European Union and Spain on the one hand and Morocco on the other hand have had an impact on overall south–north human flows. In particular, this line of inquiry focuses on the way incentives (aid-based, diplomatic, legitimation, etc.) are deployed by Spain and the European Union to ensure that Morocco prevents irregular migrants from crossing into Europe. Overall, it is important to address two kinds of questions relating to the security issues in mass migration and the forms and nature of international collaborations to manage mass migration from Africa to Europe. The intersection of security issues with pragmatic collaboration in international relations is critical to examine. In terms of security, mass irregular migration is tied to human, cultural, and state security concerns. In terms of the management of migration, the various forms of incentives, mainly development assistance and diplomatic support, are used to get Morocco to enforce stringent anti-immigration practices. However, the system of incentives created by actors in the north also creates a form of mutual dependency between Morocco and Europe in a way that enhances the agency of Morocco in its relationship with Spain and the European Union as a whole.