BusinessDemocratic Republic of CongoDRC: Mines, the M23 militia and the true cost of coltan06:26This browser does not support the video element.BusinessDemocratic Republic of CongoJörg Brase09/08/2025September 8, 2025M23 rebels control the eastern Democratic Republic of Congo, and with it one of the world's largest sources of coltan — a mineral prized by the tech sector.Copy linkAdvertisement