This book provides a pre-history of Russia's war on Ukraine and Europe's relations to it, illuminating the deep roots of the EU's neighbourhood crisis as well as the migration crises it created in the last decade. To do so, the book employs a new and innovative framework that allows for a comprehensive, yet nuanced analysis of borders and a more cogent interpretation of their socio-political consequences. Drawing on interdisciplinary scholarship the book analytically examines the key common elements of borderscapes and links them in related arrays to allow for nuanced evaluation of both their particular and cumulative effects, as well as interpretation of their overall consequences, particularly for issues of identities and orders. The book offers a significant conceptual and theoretical advance, providing a transferable conceptualization of borderscape to guide research, analysis, and interpretation. Drawing on the author's experience in policy, practice and academia, it also makes a methodological contribution by pushing the boundaries of reflexivity in interpretive International Relations (IR) research. Analyzing three main sites in Central and Eastern Europe (CEE), the book challenges conventional critical wisdom on EU bordering in the Schengen zone, at its external frontiers, and in its Eastern neighborhood. In so doing, it sheds new light on the post-communist transitions as well as the contemporary politics of CEE. It also shows how European Union bordering and its relations to identities and orders created great benefits for many Europeans, but also hindered the lives of many others and became self-defeating. This book is a must-read for scholars, students, and policy-makers, interested in a better understanding of Critical Border Studies (CBS) in particular, and International Relations in general. It will also appeal to anyone interested in CEE or wishing to get a deeper understanding of Russia's war and the fight for Europe's future.