Why is the Horn such a distinctive part of Africa? This book, by one of the foremost scholars of the region, traces this question through its exceptional history and also probes the wildly divergent fates of the Horn's contemporary nation-states, despite the striking regional particularity inherited from the colonial past. Christopher Clapham explores how the Horn's peculiar topography gave rise to the Ethiopian empire, the sole African state not only to survive European colonialism, but also to participate in a colonial enterprise of its own. Its impact on its neighbours, present-day Djibouti, Eritrea, Somalia and Somaliland, created a region very different from that of post-colonial Africa. This dynamic has become all the more distinct since 1991, when Eritrea and Somaliland emerged from the break-up of both Ethiopia and Somalia. Yet this evolution has produced highly varied outcomes in the region's constituent countries, from state collapse (and deeply flawed reconstruction) in Somalia, through militarised isolation in Eritrea, to a still fragile 'developmental state' in Ethiopia. The tensions implicit in the process of state formation now drive the relationships between the once historically close nations of the Horn.‘A sharp political history’ — Foreign Affairs‘[An] important and eminently readable new book...masterful...the book constitutes an extremely valuable tool for practitioners. Its message is a powerful one.’ — Cambridge Review of International Affairs‘Distinguished political scientist and veteran Ethiopianist Christopher Clapham has written a fascinating account...insightful, thoughtful, and full of wisdom.’ — African Studies Review‘An accessible history of one of the most unique corners of Africa…an important book of history that is frankly a pleasure to read.’ — H-Africa‘An excellent introduction to the specificities of the Horn.’ — Phébé‘Successfully depicts the Horn of Africa as much more than the disaster zone it is widely perceived to be.’ — Survival