By Tommy Wilkes and Ayenat Mersie NAIROBI (Reuters) – The United Nations is hopeful it can resume aid deliveries into Ethiopia’s war-torn Tigray region “in days” following a truce agreed between combatants, but some remote areas remain off-limits, the head of its humanitarian office (OCHA) for Ethiopia said on Friday. Ethiopia and the Tigray People’s Liberation Front (TPLF), the party that controls the region, agreed on Wednesday a “permanent cessation of hostilities”. That followed two years of war that has killed thousands, displaced millions and left half of Tigray’s 5.5 million people in s…