Nearly 3,000 people have been killed in fighting between the Mouvement du 23 mars (M23) rebel group and the Congolese army for control of Goma, a key eastern city and the capital of North Kivu province, a senior United Nations official in the Democratic Republic of Congo (DRC, DR Congo) said on Wednesday. The fighting has displaced at least 700,000 people in Goma and surrounding areas since early January, creating a dire humanitarian situation.