Ensuring an area of freedom, security and justice represents one of the most important tasks undertaken by the European Union. In this context, the European arrest warrant is at this moment an important form of judicial cooperation in criminal matters in the European Union. Based on these facts, in this book, besides analyzing the European arrest warrant, we also examined the recognition and the enforcement of judicial decisions taken by the competent judicial authorities of another Member State. The European arrest warrant institution was examined from the perspective of Romanian legislation, doctrine and jurisprudence. Designed in an accessible manner for the reader, in this material there are also presented the views from the Romanian and European doctrine and the decisions of the Romanian court or of the ECHR. Given that there are highlighted some critical observations as well, the book may be useful to the academic environment, to the European or Romanian legislator, to the judicial authorities of the Member States directly involved in the complex task of judicial cooperation in criminal matters from the European Union space.