It focuses on the progress being made in delivering assistance in legal and related capacity-building matters by the United Nations Office on Drugs and Crime (UNODC), specifically by its Terrorism Prevention Branch (TPB). Since launching its global project on strengthening the legal regime against terrorism in January 2003, the TPB has supported approximately 126 countries directly through missions, video conferences, and visits of national officials to the TPB or indirectly through subregional and regional workshops. These TPB activities have assisted in the ratification and implementation of the universal legal instruments against terrorism and in strengthening the capacity of national criminal justice systems to implement their provisions in compliance with the principles of the rule of law. The TPB has continued to expand and enhance its network of field-level experts, who are based in strategic locations throughout the world. The report identifies the challenges faced by the UNODC, notably assistance to member states in implementing the United Nations Global Counterterrorism Strategy (General Assembly resolution 60/288 of September 8, 2006). In order to facilitate a more sustained impact of its counterterrorism technical assistance, the TPB has developed a number of technical assistance tools. These include a checklist of offenses and jurisdictions specified in the universal instrument on terrorism and Security Council resolution 1373. New tools and working document are being developed, and existing tools are regularly updated.