This chapter provides insights on pertinent issues for Somalia's state-building process by examining how other countries have experienced state-building and peace-building, with a particular focus on the inclusion and exclusion of certain actors. The aim is to help policymakers make more informed decisions and avoid mistakes that have been generated in other contexts. The chapter focuses on four key themes that are relevant to the context of Somalia: the role of extremist armed groups, the influence of elites, the devolution of power, and the constitution-drafting processes. It is shown that the peace-building and state-building processes of Afghanistan, the Democratic Republic of Congo, Mali, and Yemen are of particular relevance for Somalia.