This book focuses on investigating if economic sanctions represent an efficient tool, which could manage to impair Iran`s illegal nuclear activities, as well as on researching the real consequences that the economic sanctions bring for individual European Union (EU) members and other relevant countries on the international scene. The efficiency of sanctions has been evaluated with the help of certain political and economic variables. The work includes detailed information on Iran`s political background, on EU`s trade relation with Iran, on Iran`s nuclear program and on sanctions imposed on Iran.