Which rules shape EU's external governance? The patterns of rule selection in foreign and security policies

This article addresses a particular aspect of EU external governance: rule selection. Drawing on institutionalist and power-based explanations we put forward an account for the choice of the specific rules that guide policy convergence between the EU and third countries. The proposed analytical framework broadens the scope of the studies examining the externalization of EU rules beyond its borders, in that we claim that the EU can promote policy convergence using rules other than the EU's. More specifically, the EU also promotes policy convergence on the basis of international and bilaterally developed rules. These analytical claims for explaining rule selection are checked against empirical data. We compare policy convergence between the EU and four neighbouring countries (Morocco, Ukraine, Georgia, and Russia) in three subfields within foreign and security policy: foreign policy dialogue, control of export of dual-use goods in the context of non-proliferation of weapons of mass destruction, and crisis management.