The United Nations refugee agency said on Sunday that more than 20,000 people have crossed into Sudan from Ethiopia’s northern Tigray region, where federal government troops are battling forces loyal to the Tigray People’s Liberation Front. Al Jazeera meanwhile quotes the leader of the TPLF as saying on Sunday that his forces fired a volley of rockets at neighbouring Eritrea’s capital, Asmara, late on Saturday and that 16 Eritrean military divisions are fighting alongside the Ethiopian government troops against the TPLF forces – an assertion that both the governments in Addis Ababa and Asmara have denied. Although it was not possible to determine whether the rockets fired into Asmara had caused any casualties, the attack marked a major escalation in the almost two-week war that has killed hundreds of people, threatening to re-ignite the 1998-2000 Ethiopian-Eritrean border conflict, in which some 70,000 people died.