In this book contributors engage into the theoretical dialogue about the interplay between terrorism and organised crime. Arguing in favour of its existence, the authors of the book seek to define the phenomenon of 'organised criminal terrorism' and examine the appropriateness of the international and regional legal frameworks on terrorism and organised crime to address this unitary criminal phenomenon. The volume reveals similarities and differences between terrorism and organised crime that support views in favour of new international legal instruments and those that defend the current approach to combat organised criminal terrorism. Contributors hope that the book will form the basis for a more informed discussion on the issue.