The M23 rebels have been trying to make inroads in mineral-rich eastern DR Congo, along the border with Rwanda, in a decades-long conflict that has sparked one of the world's largest humanitarian crises.

The M23 rebel group's aggressive advance into the mineral-rich east of the Democratic Republic of Congo has displaced thousands, threatening areas like Goma. The rebel force has gained control of key mining territories,

Displaced Congolese make their way along the road leading to the centre of Goma, the capital of North Kivu province, as the Rwanda-backed M23 armed group continues to gain ground.