Eastern Sudan is in a critical stage, where local fault lines intersect with Horn of Africa tensions and regional and international ambitions. This study traces those fissures and their intersections in order to understand and analyze the conflict in the region. Its basic premise is that eastern Sudan represents the priority and geographical entry point in the Sudanese peace-building process, and that the establishment/strengthening of peace in this region is linked to a reciprocal relationship with the security and stability of the Horn of Africa. The study presents preliminary ideas, in terms of preventive diplomacy, that may contribute to healing the rifts. It is based on a combination of primary sources, literature, and personal interviews with Sudanese academics, diplomats and other actors. In addition, it builds on the outputs of two workshops from the Sudan Track II Peace Dialogue Project. It frames some aspects of the analysis and ideas presented with a set of theories and hypotheses that intersect with the field of conflict studies, following the "combined approach," for studying complex conflict environments