The festive atmosphere of newly elected Somali President Hassan Sheikh Mohamud’s inauguration in early June did little to hide the tensions between Egypt and Ethiopia, whose prime ministers both attended. Cairo and Addis Ababa are currently engaged in a struggle over the Grand Ethiopian Renaissance Dam (GERD), which Ethiopia says is essential for its development. Egypt fears the dam will reduce its share of Nile waters. The participation of Egypt’s Prime Minister Mostafa Madbouly, on behalf of President Abdel Fattah el-Sisi, reflected Cairo’s recognition of the importance of the region both in…