Prof. Ryszard Zięba is a Full Professor at the Institute of International Relations, Faculty of Political Science and International Studies, University of Warsaw, Poland. He served in the National Security Strategic Review Commission appointed by the President of the Republic of Poland and prepared expertise for the Polish Parliament, Ministry of Foreign Affairs, Ministry of Regional Development, National Security Bureau and for the European Commission as Jean Monnet Chair. He published 22 books and about 400 papers and articles on international security, Poland’s and other Central European states and the European Union’s foreign and security policy as well as on theory of security studies and international relations. At the University of Warsaw, he teaches the courses “International politics,” “European security,” “EU’s security and defence policy,” “Poland’s foreign policy,” “Theory of international relations,” and “Foreign Policy Analysis”.

• Introduction.- Part I: Background.- The Euro-Atlantic Security System in the 1990s.- Changing Challenges and Threats for Euro-Atlantic Security in the 21st Century.- The Security Concepts of Participants in the Euro-Atlantic Security System.- Part II: The Functioning of the System: From Cooperation to Crisis.- The Failure to Eliminate Terrorism.- The West’s Dominance and Expansion and Russia’s Response.- The European Union in Crisis.- The Marginalization of the OSCE.- Part III: Consequences and Prospects.- The Ukraine Crisis and Its Implications for the Euro-Atlantic Security System.- Conclusions: Consequences of the Crisis of the Euro-Atlantic Security System and Prospects for Its Evolution.-