Democratic Republic of Congo President Felix Tshisekedi has insisted that his troops are mounting a "vigorous" response to Rwanda-backed fighters advancing in the country’s perennially troubled east,

M23's last occupation of Goma was short-lived, and within a year they were a defeated force. This time, things are different.

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.

Protesters have attacked embassies in the Democratic Republic of Congo's Kinshasa over Rwanda-backed rebels fighting in Goma. Elian Peltier, an international correspondent for The New York Times, joins CBS News with the latest.

Rwanda-backed fighters advanced on a second front in their offensive across eastern DR Congo on Wednesday after seizing control of most of the key city of Goma during heavy fighting with the Congolese military.