This book is the concise story of NATO. It considers the origins, development, challenges, structure, and direction of the Alliance against the backdrop of a changing world and a changing Europe, the changing relationship of the United States to its Allies, the twin threats posed by both Russia and terrorism, the emerging challenge of China, and the EU-NATO relationship. Crucially, the book considers the impact of new and emerging disruptive technologies on NATO planning, force and resources, as well as NATO's place in a changing world. Women, peace, and security are discussed, together with NATO's role in combating climate change. Central to the book is a debate over the future of deterrence and defense and the role of nuclear, conventional, cyber, and information strategies in a new deterrent posture. The book concludes by looking out to 2030 and beyond. The worldwide market will include academia, the student body on all aspects of IS, strategic studies, Cold War history, think-tanks, international institutions, and interested readers.