Ethiopia has accused Eritrea of an “all-out invasion” in a message to the United Nations Security Council, alleging Eritrean troops advanced up to 60 kilometers (37 miles) into Ethiopia’s northern Tigray region. Eritrea, in turn, claims Ethiopia is pursuing an “unprovoked war of aggression” and denies backing the Tigray People’s Liberation Front (TPLF). The accusations come days after the two nations cut diplomatic ties, further straining their volatile relationship amid ongoing conflicts in the Horn of Africa and tensions across the Red Sea.