The objective of the Evaluation of the Mision de Apoyo al Proceso de Paz in Colombia of the Organization of the North American states was to provide a summative and a formative evaluation of the MAPP/OEA since its inception, with a particular emphasis on its last 2010/2013 phase. The evaluation mission had to evaluate the overall impact of the monitoring process undertaken by the MAPP/OEA in regard to three major thematic areas of the mission, e.g. DDR, Transitional Justice and Peacebuilding and Reconciliation. In full cooperation with the Government of Colombia, the MAPP/OEA has been working in Colombia’s most difficult and “hot” areas in the midst of the civil war which has been raging in the country for more than 60 years. It managed to implement monitoring and “accompanying” processes of local communities towards transitional justice, land restitution, reconciliation and reparation.