Abstract
The article focuses on the institutional reforms of the European Union's foreign policy from the perspective of input and output legitimacy. It aims at two objectives: to analyse the potential contribution of the establishment of the European External Action Service headed by the Union's High Representative for Foreign Affairs and Security Policy for the legitimacy of the EU's international activity, and to tentatively evaluate to what extent the potential is being fulfilled in practice.
It concludes that the new institutions have the potential to raise the output legitimacy of the EU, but only if the member states are considered constitutive actors of the EU and if the institutions manage to keep a high level of input legitimacy. Nevertheless, it is too soon to decide whether this will be possible in practice.