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.

Weeks after signing a peace deal with Rwanda, the Democratic Republic of the Congo has reached an accord with M23 rebels operating in the country's North Kivu region. But long-time observers of the DRC's attempts to restore peace within its borders aren't ready to celebrate.

The Democratic Republic of Congo and Rwanda-backed armed group M23 signed a ceasefire deal on Saturday to end fighting that has devastated the country's mineral-rich but conflict-torn east.The two sides signed a declaration of principles whose terms include a "permanent ceasefire",