LAUSR

Abstract According to the international legal system, countries in transition from authoritarian rule have the duty to provide truth, justice and reparations, and to prevent the recurrence of systematic human rights violations. Security sector reforms are a key preventive mechanism, and this article analyzes the impact of these reforms on the recurrence of torture, killings, and disappearances. As there are many types of reforms in the security sector, the main research question is: which reforms, or combination of reforms, are effective in preventing the recurrence of human rights violations? Brazil experienced a brutal military regime between 1964 and 1985, when security forces were involved in systematic human rights violations. A case study of the Brazilian transition from military authoritarian rule was conducted and the findings suggest that the involvement of armed forces in domestic issues, weak civilian authority, overlapping jurisdiction, and blurred lines of command within the security forces have a negative impact on the outcome of interest. Finally, contributions were made to scholarly debates concerning transitional justice, human rights, and institutional change