This timely book fills an important gap in the literature of international relations, providing a thorough, up-to-date, empirically supported, and theoretically grounded analysis of how and why Turkish foreign policy has changed in recent years vis-a-vis the West. Presenting one of the first balancing studies that employs elite interviews as data, TurkeyWest Relations develops a framework of intra-alliance opposition, classifying the tools of statecraft into three categories - boundary testing, boundary challenging, and boundary breaking. Six case studies are examined regarding Turkish foreign policy over the past nine years, exploring an array of topics including Turkey's foreign policy in relation to various nations and organizations, the refugee crisis, defense procurement, energy policies, and more. Dursun-Ozkanca demonstrates how international, regional, issue-specific, and domestic factors may serve to explain Turkey's increasing boundary-breaking behavior. This book is crucial for anyone who seeks to understand the recent growing rifts between Turkey and the US, the EU, and NATO.