The analysis of terrorist attacks is crucial for understanding, countering and preventing terrorism. A multidisciplinary approach is used to identify the causes, motives, characteristics and consequences of terrorist incidents. The analysis enables the prevention of future attacks, the identification of security flaws, the evaluation of reactions to attacks, the study of terrorist tactics and the raising of public awareness. It contributes to the development of adequate political, legal and security strategies to protect the safety and stability of societies. The analysis of terrorism in Belgium, France, Germany and Spain is crucial because of their geopolitical importance, diverse attack patterns and rich experience in the fight against terrorism. These countries have often been the targets of terrorist attacks, the impact of which crossed national borders, highlighting the need for international cooperation in combating terrorism. The complex social structures of these countries provide an environment for diverse ethnic and religious dynamics that can be linked to terrorism. The time frame of the research from 2015. to 2022. includes a period marked by dynamic events and important changes in the political, social and security context, which makes it extremely relevant for the analysis of terrorist activities and their implications in the mentioned areas. The aim of this paper is to investigate the causes and motives of terrorism in order to identify the key factors that encourage terrorist activities in Western Europe. An assessment of the socioeconomic, political and security consequences of terrorist attacks on states and their institutions is investigated in order to provide insight into the overall impact of terrorism on society. The development of preventive strategies and policies aimed at preventing future terrorist incidents is being explored. Various methodological approaches are used, including quantitative analysis of statistical data, qualitative research of relevant literature and documentation, and case studies of terrorist incidents.