Democratic Republic of Congo's M23 rebels are moving south towards Bukavu, the capital of South Kivu province, in what appears to be an attempt to expand their area of control in the country's east after capturing the city of Goma.

M23 plans to govern the city of Goma - a key gateway to rich mining areas that produce valuable resources like gold, tin, and coltan - giving the armed group access to trade routes and economic power

Rwanda-backed rebels captured large parts of eastern Congo's largest city including its airport, the United Nations said, as Rwanda's president joined calls for a ceasefire.