The United Nations Security Council has condemned the capture of Goma in the Democratic Republic of Congo by M23 rebels.
A statement by the 15-member council said: "(The council) demands the immediate withdrawal of the M23 from Goma, the cessation of any further advances by the M23 and that its members immediately and permanently disband and lay down their arms."
UN experts claim Rwanda is behind the rebellion in eastern Congo and that Uganda has also aided M23.
Both countries deny the accusations.
The Congolese M23 rebels, who UN experts claim are backed by Rwanda, have reached the outskirts of Goma but claimed they do not plan to take the city.
The group claims they are within two miles of the city which is home to the headquarters of the UN peacekeeping mission in eastern Democratic Republic of Congo.
Rebels in eastern Democratic Republic of Congo have advanced to within two miles of the largest city in the area, Goma.
The M23 rebels captured Kibumba, a town 19 miles north of Goma, on Saturday and claim they can "easily" take the city.
Col. Vianney Kazarama, a spokesman for the rebels, said: "We can take Goma easily now, we have pushed the Congolese army back over 10 kilometers (six miles) in one day. We are confident that we can take Goma and then our next step will be to take Bukavu".