This pocket book is comprised of the principal policy documents and multilateral legal instruments on international and European criminal law, with a special focus on Europol and Eurojust, as well as on initiatives aimed at combating international crime, organized crime, or terrorism. The sixth revised edition provides professors, students, judicial and law enforcement authorities, lawyers, and researchers with an accurate, up-to-date and low budget edition of essential texts on these matters. These texts have been ordered according to the multilateral cooperation level within which they were drawn up - either Pr m, the European Union (comprising also Schengen-related texts), the Council of Europe, or the United Nations. Within each of these four parts, they have been included in chronological order. The book comprises 34 newly added texts, including a series of newly adopted framework decisions, the new legal framework for Eurojust and Europol, the new EU Treaties, and the Stockholm Programme. Instruments amending others have been implemented for coherence and maintaining the spirit of the amendments in spite of small technical errors in the amending instruments. The amendments included in the Council Framework Decision of 26 February 2009, on trials in absentia, have been implemented in the framework decisions concerned with an indication in a footnote as to the application date. Exceptionally, both the Convention of 26 July 1995 on the use of information technology for customs purposes (and the 2003 Protocol thereto) and the Council Decision of 30 November 2009 on the use of information technology for customs purposes have been included, because the latter will replace the current Convention and its Protocol as of 27 May 2011.