JOHANNESBURG — The presidents of Congo and Rwanda are meeting in Uganda to try to revive Congo's stalled peace talks with rebels who are widely believed to be backed by Rwanda.

James Mugume, the permanent secretary at Uganda's Foreign Ministry, said Thursday that Uganda's president called the regional summit in order "to stop the fighting and get back on the negotiating table."

The summit is also being attended by United Nations special envoy Mary Robinson, who has urged a political solution to the crisis.

The M23 rebels last week declared a unilateral cease-fire, after a week of fighting, saying they wanted to "give peace a chance," but Congolese officials said they want the M23 to be disbanded.

Rwanda denies backing the rebels.