Rwanda-backed rebels who have captured eastern Congo’s largest city say they plan to take their rebellion to the capital of Kinshasa and seek to gain political power.

The latest fighting has heightened an already dire humanitarian crisis in the region, forcing half a million people from their homes since the start of the year.

Rebels backed by Rwanda captured more towns in eastern Congo as fighters moved beyond the key city of Goma in an apparent attempt to expand their control in the conflict-battered