Tensions are ratcheting up in the Horn of Africa over the deployment of Egyptian troops to Somalia. Ethiopia, Somalia's neighbor, isn’t happy. It has soldiers in Somalia acting as a buffer against al-Shabab insurgents, but now Mogadishu has asked them to withdraw. High-stakes strategic interests are at play. Ethiopia and Egypt have been locked in a long-standing dispute over the Grand Ethiopian Renaissance Dam, which Egypt regards as an existential threat. Meanwhile, landlocked Ethiopia has also enraged Somalia over its determination to find a port to lease. It has turned to the breakaway region of Somaliland, dangling the prospect of recognizing its independence—an absolute red line for Mogadishu. The new defense agreement between Egypt and Somalia has underlined just how serious the tensions are. Egypt is planning to send 5,000 soldiers to Somalia to join a new-look African Union force, with a separate 5,000 stationed on the Ethiopian border. (Map: PCL)