Analysts say the deadly march by Rwanda-backed rebels across eastern Congo could widen into a regional conflict drawing in even more countries, and two neighboring nations with the most involvement in the mineral-rich area might be the key to stopping the violence.

Creating sustainable peace in Congo requires giving justice to the victims of war crimes and preventing the illicit trade in minerals.

M23 now controls nearly all of North Kivu and the province’s vast mineral wealth—including tin (cassiterite), tantalum (coltan), tungsten (wolframite), and gold, which are critical for global electronics and industrial production.