ETHIOPIA’S northern Tigray region is too volatile for aid to reach hundreds of thousands of civilians in need, humanitarian workers have said, amid reports of persistent fighting, looting and lawlessness. Aid agencies have warned of a lack of food, medication and body bags in Tigray, where 600,000 people were already receiving food aid before a month of fighting began between Prime Minister Abiy Ahmed's government and a rebellious regional force. Abiy declared victory over the Tigray People's Liberation Front (TPLF) after federal troops captured the regional capital Mekelle eight days ago, saying not a single civilian had been killed in…