Master's Thesis from the year 2020 in the subject Politics - International Politics - Topic: International relations, grade: 110/110 cum laude, University of Pavia, language: English, abstract: This thesis focuses on the role that external actors play in rebuilding one crucial issue that is at stake in these contexts, which is the legitimacy of post conflict political systems. The analysis will take into account the strategies and programs implemented by external forces specifically by intervening in three key areas: transitional governments, constitution-building processes and elections. The case study analyzed in this thesis is the Afghan one, particularly complex but fundamental to understand the strategies that these actors adopt in such contexts, and the results that can be achieved in countries that recover from conflict. After providing a theoretical framework concerning democratization and its features in war-torn countries, the analysis of the Afghan case will take into account the three areas mentioned above in order to evaluate the impact of external actors in rebuilding legitimacy in the country. Historically, democratization processes have always attracted the attention of scholars and practitioners. However, one case of particular relevance, especially starting from the end of the Cold War, has attracted increasing attention, that is the one of countries that went through violent conflict and start their transition to democracy and peace from a situation of violence and instability. In such scenarios, often external actors, notably the United Nations, intervene with the aim of supporting the transition towards democratic and peaceful assets. However, the outcomes of these interventions are often mixed.