The U.N. says more than 110,000 displaced people have in recent days left settlement camps in eastern Congo’s cities controlled by Rwanda-backed rebels after the rebels were accused of forced camp clo

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.

Rwandan-backed M23 rebels in the Democratic Republic of Congo threatened on Tuesday to advance on the provincial capital of Bukavu, citing a "dangerously deteriorating" situation, amid renewed skirmishes on the front line.