After Berlin Conference in 1884 to 1885, Somalia was partitioned into five parts by Britain, Italy, and French. In 1960 two parts gained independence and formed the Somali Republic, and since then successive Somali governments sought to incorporate the other three parts of Somali territories under Ethiopia, Kenya and French Somaliland known as Djibouti into Greater Somalia.The aim of this study has been to explore and analyze the causes, and the impact of the Somalia’ irredentism on political stability in Somalia. In more specifically, the main objective has been to critically examine how Somali irridentism policy has been pursued, what challenges faced and how it has affected the political stability of the post-colonial Somali state from 1...