Part I: The Concept of Structural Principles 1. Structural Principles and their Role in EU External Relations Law Marise Cremona 2. Structural Principles in EU Law: Internal and External Loïc Azoulai 3. Enforcement of and Compliance with Structural Principles Edoardo Chiti Part II: Relational Principles 4. To Give or To Grab: The Principle of Full, Crippled and Split Conferral of Powers Post-Lisbon Inge Govaere 5. Subsidiarity as a Structural Principle Governing the use of EU External Competences Geert De Baere 6. Conferral, Cooperation and Balance in the Institutional Framework of EU External Action Christophe Hillion 7. Pars Pro Toto : The Member States' Obligations of Sincere Cooperation, Solidarity and Unity Joris Larik 8.

The Principle of Transparency in EU External Relations Law: Does Diplomatic Secrecy Stand a Chance of Surviving the Age of Twitter? Päivi Leino 9. The Rule of Law as a Relational Principle Structuring the Union's Action Towards its External Partners Ilaria Vianello Part III: Systemic Principles 10. 'Building Coherent EU Responses': Coherence as a Structural Principle in EU External Relations Mireia Estrada Cañamares 11. The Search for Effectiveness and the Need for Loyalty in EU External Action Anne Thies 12. The Principle of Autonomy: An Adolescent Disease of EU External Relations Law? Jed Odermatt.