The Economics of Russia’s War in Ukraine provides a thorough analysis of the Russo-Ukrainian war, tracing its historical roots and exploring its multifaceted dimensions. This book emphasizes economic, geopolitical, and humanitarian impacts, highlighting Ukraine’s resilience amid challenges. At the same time, this study examines the EU’s dynamic responses to economic crises and energy transition, the consequences of the war on global trade dynamics, and the significant influence of geopolitical events on financial markets. It underscores the EU’s commitment to aiding Ukraine, enhancing its security, and increasing defence spending in response to evolving geopolitical complexities. The impact of the invasion on financial markets and the vulnerabilities of the banking sector are closely examined, highlighting the complex relationship between geopolitics and the global economy. Findings suggest that the priorities for the post-war reconstruction of Ukraine include addressing human capital and demographics, employment opportunities, environmental protection, infrastructure and housing reconstruction, security and mine clearance, waste recycling, agriculture and food security, digital transformation, social protection and healthcare, and education and research. This book therefore argues that a comprehensive, integrated approach with international support is crucial for Ukraine’s recovery and sustainable economic growth. The Economics of Russia’s War in Ukraine will be useful for scholars, students, professionals, policy makers, all interested in economics, international relations, security, and global studies, as well as all those wishing to have a thorough and clear understanding of the backdrop of Russia’s invasion of Ukraine in February 2022 and its influence on Europe.