List of tablesList of contributors1 Introduction: membership anniversaries and theoretical security models2 Cold War security experiences of Eastern European states3 Anti-communist revolutions and the emergence of states responsible for their own defense4 NATO: Partnership for Peace (PfP) and a staggered admission process5 The EU as a security provider in Eastern Europe6 Secure East-Central European NATO members: the Czech Republic, Hungary, and Slovakia7 Stable Balkan NATO/EU members: Albania and Bulgaria8 Vulnerability of former Yugoslav NATO (Slovenia, Croatia, Montenegro, and North Macedonia) and non-NATO (Bosnia-Herzegovina, Kosovo, and Serbia) states9 States with significant security issues: Poland, Romania, and Moldova10 Challenged Baltic states: Estonia, Latvia, and Lithuania11 Conclusion: moving beyond the 15–20–year anniversaries to stable policies in a time of constant political turmoilBibliographyIndex