This book examines the role and impact of European Union (EU) agencies in the areas of justice and home affairs, common foreign and security policy, and common security and defense policy. Through comparative case studies of thirteen key agencies, including the European Defense Agency (EDA), Europol, Frontex, and the Fundamental Rights Agency (FRA), it sheds light on the agencies' roles and impacts.The book explores four main areas: the conditions that led to the establishment of these agencies, their institutional structures, how they execute their powers, and how they have responded to Russia’s war against Ukraine. Using the principal-agent concept, the book analyzes power delegation, information asymmetry, accountability, and control.The book provides insight into the agencies' activities, their role in enhancing the security of EU citizens, and their response to Russia's invasion of Ukraine. Additionally, it discusses future challenges and prospects for EU agencies in the evolving security landscape. Therefore, this book will appeal to scholars, students, policymakers, security professionals, and anyone interested in the EU's security framework and the role, impact, and future challenges of EU agencies in security and defense.
