Introduction : diasporas for peace and development / Petri Hautaniemi and Liisa Laakso -- Part 1. Contextualizing the Horn of Africa and the diaspora. Diaspora and multi-level governance for peace / Liisa Laakso -- Regional political history and the production of diasporas / Guenther Schlee -- Part 2. Case studies from the Horn of Africa. Rebuilding Somaliland through economic and educational engagement / Markus Virgil Hoehne and Mohamed Hassan Ibrahim -- The Somali diaspora in conflict and peacebuilding : the Peace Initiative Programme / Mahdi Abdile -- The 2007 delegation of the Muslim diaspora to Ethiopia / Dereje Feyissa -- The Ethiopian diaspora and the Tigray Development Association / Bahru Zewde, Gebre Yntiso and Kassahun Berhanu -- Part 3. European approaches to diaspora engagement. Interaction between Somali organizations and Italian and Finnish development actors / Petra Mezzetti, Valeria Saggiomo and Päivi Pirkkalainen -- Approaches to diaspora engagement in the Netherlands / Giulia Sinatti -- Norwegian collaboration with diasporas / Rohan Ezzati and Cindy Horst -- Afterword / Petri Hautaniemi, Liisa Laakso and Mariko Sato.