The Changing Politics of European Security; A.G.Sens PART I: CHANGING SECURITY PERCEPTIONS IN EUROPE AND NORTH AMERICA Internal and External Security in the EU: Is There Any Longer a Distinction?; M.Anderson Security Perspectives in Post-Communist Eastern Europe: 'Easternization' and 'Europeanization'; L.Cohen Transatlantic Differences on Security Perceptions and Responses; F.Cameron PART II: "READY TO GO ALONE?" UNFOLDING THE EU'S SECURITY AND DEFENSE POLICY Common Security and Defense Policy in the Treaty Establishing a Constitution for Europe; M.Álvarez The European Neighbourhood Policy (ENP): A Strategy for Security in Europe?; S.Gänzle Russia and ESDP: Partnership Strategy versus Strategic Partnership; D.Danilov PART III: EUROPEAN SECURITY AND THE TRANSATLANTIC RELATIONSHIP From an Alliance of Commitment to an Alliance of Choice: The Adaptation of NATO in Time of Crisis; H.Haftendorn The Challenges and Limits of NATO-ESDP Synergy; A.Moens Strategic Partners, Different Strategies: The United States and Canada in the Transatlantic Security Community; F.Merand