The impact of US peacekeeping activities on the security of European Union Countries

Purpose of the study: This scientific publication aims to analyse military strategy in the context of political and social conditions as a reaction to the events of 11 September 2001. Methodology: Based on the resources of the Internet and a critical analysis of the literature on the subject, a detailed analysis, dynamics and development of the military strategy of the US and EU services was made against the background of historical events, in the context of peacekeeping missions. Taking into account the effectiveness of the implemented peacekeeping missions concerning the security of EU countries. Main findings: Cooperation between the US and EU countries affects the sense of security, with appropriate diplomacy, shaping a positive image of the state, concluding international agreements, implementing the assumptions of cooperation, and supporting countries on many levels, including the military. Application of the study: The presented research relates to the legal sciences with a specific reference to the research field in the field of national security and defence. Original/Novelty of the study: The research analyzed the effectiveness of the activities carried out and its impact on the population of a given country as part of peacekeeping missions. However, as a result of a critical analysis of the scientific literature, certain conclusions were systematized in relation to the strategies that influenced the shaping of the present reality within the European Union countries.