This timely study considers the challenges of developing a foreign policy for a union of 27 states while taking national political processes into account. Serrano analyses the relevance of domestic political processes for the EU's common policies and examines the democratic deficit in the EU foreign policy, thereby highlighting what is unique about it and reflecting on its possible evolution. As the EU continues to face difficulties in formulating common policies, this volume offers a unique insight into the complexities of enhancing the EU's common policies by assessing domestic political debates and the role of actors who legitimise or constrain support for common policies