Rwanda-backed M23 rebels faced pockets of resistance from army and pro-government militia overnight after entering eastern Congo's largest city Goma in the worst escalation of a conflict that has run for more than a decade.

In the capital, Kinshasa, protesters complaining of a lack of international action attacked foreign embassies, including those of the U.S., France and Rwanda.

Kenyan President William Ruto said Monday that the presidents of Rwanda and Congo have agreed to attend a meeting Wednesday to discuss developments in eastern Congo, where M23 rebels say they have seized control of Goma on the Congo-Rwandan border.