Hopes for a ceasefire in the Democratic Republic of Congo are fading as the Rwanda-backed rebel group, M23, is vying to expand its control. NBC News’ Steve Patterson reports on the violence in the mineral-rich country.

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 have seized control of a mining town in eastern Democratic Republic of Congo's South Kivu province, eight sources said on Wednesday, in an apparent violation of a unilateral ceasefire they declared this week.