NAIROBI—The United States has ordered non-emergency U.S. government employees in Ethiopia to leave because of armed conflict, civil unrest and violence, its embassy in Addis Ababa said on Saturday. Denmark and Italy also asked their citizens in Ethiopia to leave while commercial flights were still available, as rebellious Tigrayan forces and their allies have advanced towards the capital Addis Ababa. Prime Minister Abiy Ahmed’s government, which has been embroiled in a year-long war against Tigrayan forces, has promised to keep fighting despite calls for a ceasefire from African nations, Western states and the U.N. Security Council. “Incidents of civil unrest and ethnic violence are occurring without warning. The situation may escalate further and may cause supply chain shortages, communications blackouts, and travel disruptions,” the U.S. Embassy said on its website. Government spokesperson Legesse Tulu and Abiy’s spokesperson Billene Seyoum did not immediately respond to requests from Reuters for comment. Abiy’s …