The Rwandan-backed M23 rebels have attacked Congolese government forces in the South Kivu province, breaking a two-day lull in fighting. Heavy shelling began on Tuesday morning, three days after a summit of East and Southern African leaders called for an immediate and unconditional ceasefire.

C orneille nangaa sits in an armchair in a five-star-hotel in Goma, the largest city in eastern Democratic Republic of Congo and stretches out his hand. “Thank you for embracing the terrorists,” he jokes, to laughter from his entourage.

Rwanda-backed rebels who have captured eastern Congo’s largest city say they plan to take their rebellion to the capital and seek to gain political power