Opposition forces unite in Ethiopia's civil war. The Tigray People's Liberation Front, which has been locked in a brutal year-long civil war against Ethiopian government forces, has now teamed up with another powerful militant outfit that wants to oust Prime Minister Abiy Ahmed. The TPLF, now in alliance with the Oromo Liberation Army – which claims to represent Ethiopia's largest ethnic group — have swept towards the capital Addis Ababa in recent days, prompting the embattled Abiy to call on civilians to take up arms in defense of the city. The Tigray-Oromo alliance, called the United Front of Ethiopian Federalist Forces, has called for Abiy's immediate ouster, either by negotiation or by force, and for the prosecution of government officials for war crimes. The UN says all sides in the conflict have committed abuses. The US, which has threatened to suspend Ethiopia's trade preferences over the government's alleged war crimes, is currently trying to broker a cease-fire. When Abiy came to power after popular protests in 2018, he was hailed for liberalizing what was formerly an extremely repressive government (controlled, as it happens, by the TPLF). Now it's looking like he may have unleashed the very forces that could tear the country apart and drive him from office — or worse.