The Democratic Republic of Congo and the M23 rebels signed a US-brokered ceasefire to end fighting that has displaced millions and left thousands dead.

Congo and Rwanda-backed rebels on Saturday signed a declaration of principles in Qatar to end decades-long fighting in eastern Congo that commits them to a permanent ceasefire and a comprehensive peace agreement to be signed in one month.

Congo and the M23 rebel group have agreed to a declaration of principles to end fighting in eastern Congo, a sign of progress after months of talks mediated by Qatar, though key details still need to be negotiated,