This paper explores the paradoxical link between the (constrained) development of EU external action and its framing within “global” co-operative frameworks. Relying on sociological approaches of EU integration and public policy analysis, it analyses the political and managerial uses of “the global” in developing EU competences, based on the comparison of two different policy areas within external action. Cooperation on migration policies and armament cooperation, two very different fields of the EU’s external action, both raise similar questions: are global actors, international organizations “threats” to the EU affirming its distinctive role in external affairs? Or are they a resource for EU actors? And how do EU actors navigate global constraints and resources? In both instances, we show that, paradoxically, EU actors have used the polysemy of the “global” as a way to legitimize the development of their own competences.