For the third week in a row, military confrontations between Ethiopian government forces and the Tigray People’s Liberation Front (TPLF) have continued unabated, ending a five-month humanitarian truce and opening a new chapter in the conflict. Battles between the warring parties in northern Ethiopia have seen the intensification of violent clashes on several fronts, accompanied by indifference to the various calls for an immediate cessation of hostilities. On 5 September, the US special envoy for the Horn of Africa, Mike Hammer, arrived in Ethiopia to persuade the parties to cease fire and ret…