This unclassified version of a report on Improving NATO¿s Defense Response contains primarily the exec. summary of the classified report, as well as the chapter on delivery systems and munitions, with classified material removed. The discussions of other areas -- esp. surveillance systems and the threat -- were omitted because little more than what appears in the summary could be said in an unclassified report. Contents: (1) Issues Before NATO and Before Congress; Topics for this Report; (2) Basic Observations; NATO Strategy and the Threat to the Central Region: Concepts for Follow-On Forces Attack; Requirements, Capabilities, Opportunities; Remaining Questions; Delivery Systems and Munitions; and Glossary. Charts and tables.

This open access volume surveys the state of the field to examine whether a fifth wave of deterrence theory is emerging. Bringing together insights from world-leading experts from three continents, the volume identifies the most pressing strategic challenges, frames theoretical concepts, and describes new strategies. The use and utility of deterrence in today’s strategic environment is a topic of paramount concern to scholars, strategists and policymakers. Ours is a period of considerable strategic turbulence, which in recent years has featured a renewed emphasis on nuclear weapons used in defence postures across different theatres; a dramatic growth in the scale of military cyber capabilities and the frequency with which these are used; and rapid technological progress including the proliferation of long-range strike and unmanned systems. These military-strategic developments occur in a polarized international system, where cooperation between leading powers on arms control regimes is breaking down, states widely make use of hybrid conflict strategies, and the number of internationalized intrastate proxy conflicts has quintupled over the past two decades. Contemporary conflict actors exploit a wider gamut of coercive instruments, which they apply across a wider range of domains. The prevalence of multi-domain coercion across but also beyond traditional dimensions of armed conflict raises an important question: what does effective deterrence look like in the 21st century? Answering that question requires a re-appraisal of key theoretical concepts and dominant strategies of Western and non-Western actors in order to assess how they hold up in today’s world. Air Commodore Professor Dr. Frans Osinga is the Chair of the War Studies Department of the Netherlands Defence Academy and the Special Chair in War Studies at the University Leiden. Dr. Tim Sweijs is the Director of Research at The Hague Centre for Strategic Studies and a Research Fellow at the Faculty of Military Sciences of the Netherlands Defence Academy in Breda.

Why NATO Endures examines military alliances and their role in international relations, developing two themes. The first is that the Atlantic Alliance, also known as NATO, has become something very different from virtually all pre-1939 alliances and many contemporary alliances. The members of early alliances frequently feared their allies as much if not more than their enemies, viewing them as temporary accomplices and future rivals. In contrast, NATO members were almost all democracies that encouraged each other to grow stronger. The book's second theme is that NATO, as an alliance of democracies, has developed hidden strengths that have allowed it to endure for roughly 60 years, unlike most other alliances, which often broke apart within a few years. Democracies can and do disagree with one another, but they do not fear each other. They also need the approval of other democracies as they conduct their foreign policies. These traits constitute built-in, self-healing tendencies, which is why NATO endures.