The objective of this article is to discuss the relationship between socioeconomic development and the execution of the United Nations peacekeeping missions during the 2000s. It focuses on Haiti’s case study, where the operation approved by the un Security Council was commanded by Brazil between 2004 to 2017. The research hypothesis raised by the research is that peacekeeping operations, although usually occurring during periods of democratic ruptures, contribute to the development of the target country. Methodologically, we employ World Bank indicators to examine if there is any relation between the periods of positive development, as indicated by variables such as gdp and per capita income, and the action of the international forces. The conclusion drawn from Haitian case study suggests that, it possible to infer that, in general, the establishment of peacekeeping operations tends to revert scenarios to reduce the quality of life, as evidenced by our analysis of the indicators.