COMMON FOREIGN AND SECURITY POLICY AND EUROPEAN SECURITY AND DEFENCE POLICY AFTER THE LISBON TREATY: OLD PROBLEMS SOLVED?

In its aim to become a global security actor, the EU is increasingly undertaking civilian and military crisis missions all over the world. These missions are based on the European security and defence policy (ESDP) which forms an integral part of its common foreign and security policy (CFSP). The Treaty of Lisbon seems to mirror the Union’s global security ambitions as it addresses the European security and defence policy in a whole new treaty section. However, European missions still depend on willing Member States to make civilian and military capabilities available to the Union for the implementation of its security and defence policy. The purpose of this article is to examine the relationship between the European Union and the Member States in the fi eld of the common foreign and security policy and the European security and defence policy and whether the Treaty of Lisbon manages to clarify the situation. What constraints, if any, do the common foreign and security policy and the European security and defence policy impose on the Member States regarding the conduct of their national foreign policy? The article argues that the relationship between the EU and the Member States can only be determined after an examination of the binding nature of primary and secondary CFSP law as well as of international agreements concluded by the Union