Among the thousands of people fleeing the five-week-old conflict in Ethiopia's Tigray region are a few dozen men, women and children from Eritrea, one of the world's most authoritarian states. They were already living as refugees in Tigray, which had long been a safe haven for them during years of conflict in Eritrea. But when Ethiopian Prime Minister Abiy Ahmed's government launched a military operation against Tigray's ruling party, the Eritrean refugees' illusion of safety was shattered as violence escalated around their camps.