The Democratic Republic of Congo is in turmoil - fighters from the notorious M23 rebel group have been surging through the country's east, battling the national army and capturing key places as they go.

The group has made dramatic advances in Congo’s North Kivu province since re-emerging as a force in late 2021. It has repeatedly denied receiving support from Rwanda. And the government in Kigali equivocates about its support for the rebels.