Rwanda-backed rebels gained ground in eastern Congo on Wednesday despite the unilateral ceasefire they declared earlier this week, taking control of a town 100 kilometers (60 miles) from the provincial capital of Bukavu,

The international community must take concrete action and impose sanctions on Rwanda to curb the M23 rebel conflict in eastern Congo and keep the peace in the wider region, Congo's communications minister told Reuters on Monday.

After taking control of Goma, the M23 rebels – backed by Rwanda – now want to advance further into South Kivu. But as they edge closer to Burundi, the war risks dragging in more neighbours.