Eritrean troops are operating with total impunity in Ethiopia’s war-torn northern Tigray region, killing, raping and blocking humanitarian aid to starving populations more than a month after the country’s Nobel Peace Prize winning leader pledged to the international community that they would leave. CNN’s Nima Elbagir reports.Eritrean troops are operating with total impunity in Ethiopia’s war-torn northern Tigray region, killing, raping and blocking humanitarian aid to starving populations more than a month after the country’s Nobel Peace Prize winning leader pledged to the international community that they would leave. CNN’s Nima Elbagir reports.