Fighting for control of the Democratic Republic of Congo's mineral wealth has killed millions. Trump wants to end it, and potentially reap huge rewards.

A U.S.-Qatar-mediated peace agreement between the Democratic Republic of the Congo and Rwanda was expected to bring an end to a decades-long cross-border conflict in central Africa when it goes into effect next week.

Representatives of Rwanda and the Democratic Republic of Congo have reached a draft agreement that could end decades of conflict. The breakthrough, mediated by the US and Qatar, provides for the "disengagement,