Graeme P. Herd is Senior Programme Adviser and Senior Fellow of the Leadership and Conflict Management Programme at the Geneva Centre for Security Policy (GCSP). At the GCSP he is Co-Director of its International Training Course in Security Policy and Co-Director of its Master of Advanced Studies in International and European Security (MAS) Programme, accredited by the University of Geneva.

John Kriendler is Professor of NATO and European Security Issues at the College of International Security Studies, George C. Marshall European Center for Security Studies, Germany. He has served as a U.S. foreign service officer and held the following NATO positions: Deputy Assistant Secretary General for Political Affairs and subsequently, Head of Council Operations in the Crisis Management and Operations Directorate.

1. NATO in an Age of Uncertainty: Structural Shifts and Transatlantic Bargains?, Graeme P. Herd and John Kriendler 2. NATO's Genesis and Adaptation: from Washington to Chicago, Graeme P. Herd, John Kriendler and Klaus Wittmann 3. U.S. Perspectives on NATO, Matthew Rhodes 4. NATO Enlargement: Close to the End?, Pál Dunay 5. NATO Partnerships: for Peace, Combat and Soft Balancing?, Graeme P. Herd 6. NATO-Russia Relations: Reset is Not a Four-Letter Word, John Kriendler 7. NATO and the Comprehensive Approach: Weak Conceptualization, Political Divergences and Implementation Challenges, Thierry Tardy 8. Pulling Together? NATO Operations in Afghanistan, Julian Lindley-French 9. NATO and Nuclear Weapons, Michael Rühle 10. NATO and Cyber Security, Jeffrey Hunker 11. NATO: Towards an Adaptive Missile Defense, Gustav Lindstrom 12. NATO and Energy Security: Defining a Role, Phillip Cornell

Understanding NATO in the 21st Century enhances existing strategic debates and clarifies thinking as to the direction and scope of NATO's potential evolution in the 21st century.
The book seeks to identify the possible contours and trade-offs embedded within a potential third "Transatlantic Bargain" in the context of a U.S. strategic pivot in a "Pacific Century". To that end, it explores the internal adaptation of the Alliance, evaluates the assimilation of NATO's erstwhile adversaries, and provides a focus on NATO's operational future and insights into the new threats NATO faces and its responses.¿
Each contribution follows a similar broad tripartite structure: an examination of the historical context in which the given issue or topic has evolved; an identification and characterization of key contemporary policy debates and drivers that shape current thinking; and, on that basis, a presentation of possible future strategic pathways or scenarios relating to the topic area.¿
This book will appeal to students of NATO, international security and international relations in general.