For the past eight months in Ethiopia's northern Tigray region, the country's federal army, backed by Eritrean soldiers and neighbouring regional Amhara forces, has been battling the Tigray People's Liberation Front. The fighting has left thousands of people dead and more than 2 million displaced. Humanitarian organisations are confronted with multiple obstacles to access the region's remote areas. As a result, thousands of civilians face famine. Our correspondents report.