Ethiopia's Tigray conflict: What's behind the fighting?

In recent weeks, the northern Tigray region of Ethiopia has become a bloody battlefield. Nobel Peace Prize-winning Prime Minister Abiy Ahmed has launched a military offensive in the region, accusing the Tigray ruling party of trying to destabilise the democracy he wanted to build. Already, the fighting has forced more than 20,000 people to flee their homes for neighbouring Sudan. Adem Abebe, an advisor and commentator on the African Union, gives us his perspective on the situation and on the danger of it spreading beyond Ethiopia's borders and destabilising the wider region.