By Laura Winkelmuller-Real, Kacper Rekawek, Thomas Renard

How do counter-terrorism services assess the threat in Europe? What trends do they notice? What are their most pressing concerns? Experts and observers regularly discuss the evolution of the terrorist threat, but what do counter-terrorism professionals have to say about this? This report aims to bring to the fore the perspectives of those that are in the first line to assess or respond to terrorism. Compared with some other initiatives focused on key terrorism trends (such as terrorism databases or indexes),1 this report focuses more strictly on a counter-terrorism perspective. While some reports on counter-terrorism already exist, they are largely drafted by and for governments. This includes notably the assessments conducted by the UN Counter-Terrorism Executive Directorate (UN CTED), which are unfortunately not in the public domain. In Europe, Europol’s TE-SAT annual reports constitute a very useful publicly available resource, although very much focused on a law-enforcement perspective. This report constitutes, therefore, an innovative attempt to monitor counter-terrorism efforts, with a focus on European Union (EU) Member States. It focuses on original sources, such as reports published by security services, a treasure of information largely neglected by scholars. It covers various dimensions, namely: 1. National threat levels (related to terrorism and/or extremism); 2. Discussion on the main types of terrorist and extremist threats perceived; 3. National security contexts in which the aforementioned threat levels and threat assessments were produced; 4. New legislative efforts designed and introduced to help CT and P/CVE efforts; 5. Main challenges to CT or P/CVE activities encountered by the EU MS; 6. Major CT operations conducted in Europe; 7. Main efforts in countering the financing of terrorism by different EU MS; 8. Key developments with regard to terrorism sanctions and proscriptions; 9. Communication and transparency efforts related to CT and P/CVE; To conduct this research, the International Centre for Counter-Terrorism (ICCT) compiled and analysed more than 70 official counter-terrorism and security reports published by the EU Member States (MS) in 2024 and 2023, which it combined with a survey distributed among European counter-terrorism officials. More details on the methodology of this report are available in the appendix. By combining practitioner perspectives gathered through the survey with detailed, structured narratives from national security documents, the report captures both operational realities and strategic priorities.  . These insights were used to develop specific themes for analysis, and to effectively describe the state of terrorism and counter-terrorism in Europe, as described by security services themselves. Overall, this report, while combining new material with data from the aforementioned secondary sources, offers original insights into the secretive world of counter-terrorism and highlights interesting trends. Furthermore, it could serve as a basis for further investigations into counterterrorism efforts, in Europe or elsewhere, including with a view to their being evaluated.   

The Hague: The International Centre for Counter-Terrorism (ICCT) 2025. 34p.