A three-year insurgency in Democratic Republic of Congo's mineral-rich east has intensified since the start of this year, with M23 rebels seizing control of more territory than ever before and vowing to take the largest eastern city,

Fighting has escalated sharply in recent weeks in eastern Congo, where rebels have seized key towns and are closing in on the city of Goma, the government’s last stronghold in the North Kivu province,

Rebels in Democratic Republic of Congo are closing in on a key city in the mineral-rich region aided by neighboring Rwanda’s army, the head of a peacekeeping mission told United Nations Security Council members during an emergency meeting on Sunday.