Ethiopia’s ruling party on Saturday named as its leader acting Prime Minister Hailemariam Desalegn, who took over after the death last month of longtime leader Meles Zenawi, an official said at the end of a congress of party bosses. As chairman of the Ethiopian Peoples’ Revolutionary Democratic Front, or EPRDF, Hailemariam, 47, will almost certainly be confirmed as the country’s prime minister in an upcoming official ceremony. Bereket Simon, Ethiopia’s communications minister, said Hailemariam would be sworn in soon. It remains unclear exactly when, but Bereket said this might happen early next month. “Since the party holds an overwhelming majority...