In this highly provocative and documented book, Thibault Muzergues describes how war in Europe is now more likely than it has been for at least the past 30 years, how it might come back to Europe and what Europeans can do to avoid getting drawn again in fratricide conflicts. Many consider Europe a continent of peace, with NATO guaranteeing its security and the EU providing the political glue for a Europe Whole and Free. But what if this was not the case anymore? What if, after a decade of crisis, today’s Europe was much more fragile than we thought? The author challenges our assumptions about peace in Europe and forces us to face the realities of a world that has become much more dangerous. Far from being apocalyptic, this book serves as an advance warning to the dangers, both internal and external that are now closing in on Europe – and suggests solutions to avoid them. This book will be key reading for those interested in European politics and history, the European Union, security, and strategic studies, and more broadly to current affairs and international relations.