Critical minerals factor into the fight.
Nearly 3,000 people were killed over the last week as rebels captured a key city in one of the deadliest battles in the ...
M23 rebels have made rapid advances in the latest bout of conflict that has long-dogged the mineral-rich east.
The U.N. voices concern over alleged atrocities as Rwandan-backed rebels reportedly advance after seizing the city of Goma in the Democratic Republic of Congo.