This book examines the recent changes in strategic stability, caused by the collapse of the international security architecture. Against the background of Russia's invasion of Ukraine, international experts discuss topics and critical issues such as the revanchist strategy of Russia and the readiness of the United States (US) and Europe to give an adequate response; the influence of new technologies in the future of nuclear deterrence; and the crumbling of the arms control and nonproliferation system under the new challenges. The book explains how the combination of these factors lead to a crucial change of strategic stability and the international security landscape, the first such change since the end of the Cold War. Divided into three parts, the book presents timely analyses on (1) US, Russia: New Challenges and Strategic Stability in Europe; (2) Extended Deterrence and Arms Control in Europe; and (3) Regional Dimensions of Strategic Stability in Europe. It further offers perspectives from and case studies on different countries, such as Ukraine, France, Germany, the United Kingdom, the USA, Turkey, Poland, and Romania. This book is a must-read for scholars for international relations, as well as policy-makers interested in a better understanding of the changing international security architecture, Russia's strategy, arms control, nonproliferation, and the future of nuclear deterrence.

Polina Sinovets is an Associate Professor at the Faculty of International Relations, Political Science, and Sociology of Odesa I.I. Mechnikov University, Ukraine. She is also the Head of the Odesa Center for Nonproliferation, based at Mechnikov University. She previously worked as a senior research associate at Ukraine's National Institute for Strategic Studies. In 2006, she was a research fellow at the James Martin Center for Nonproliferation Studies, Washington DC, USA; a research fellow at the NATO Defence College in Rome, Italy, in 2015; and in 2017/18 a Fulbright Scholar at the James Martin Center for Nonproliferation Studies in Washington DC, USA. She is an expert on nuclear weapons policy and published various articles on the topic. William Alberque is the Director of the Strategy, Technology, and Arms Control Programme at the International Institute for Strategic Studies in Berlin, Germany, focusing on nuclear deterrence and non-proliferation, arms control, risk reduction, and other international security issues. He previously served as the Director of NATO's Arms Control, Disarmament, and Non-Proliferation Centre, and worked for the US Government for more than two decades on nuclear security and safeguards, WMD non-proliferation, arms control, CSBMs, SALW, CBRN defense, pandemic response, and nuclear accident response.