After the fall of the Berlin wall and the disintegration of the former USSR and Yugoslavia, it has widely been assumed that socialist federations have become a thing of the past. Ethiopia's ethnic federal system however is essentially a socialist federal system based on the notion of the 'right to self-determination of nationalities' and a Marxist-Leninist organization of the state and party. This book assesses the Ethiopian ethnic federal system from the perspective of the principles of socialist federations and other Marxist oriented policies pursued by the ruling Ethiopian Peoples' Revolutionary Democratic Front (EPRDF). Exploring how the application of these ideological principles has impacted on the structure and function of the Ethiopian federal system, the research examines the ways in which these ideological policies of the ruling party affect national consensus, protection of human rights, the rights of minority groups, separation of power principles and the relationship between the federal and regional governments. It also explores the extent to which ideological principles have had an impact on the democratization process, rule of law and in building up institutions such as parliamentary democracy, the judiciary, the media and civil society organizations in the country. Approaching the Ethiopian federal system from the perspective of the fundamental ideological principles of the party in power allows a deeper insight into the structure and function of the ethnic federal system.