The Democratic Republic of Congo and Rwanda have signed a peace deal facilitated by the U.S. to help end the decades-long, deadly fighting in eastern Congo. The deal was signed Friday by the foreign ministers of the two countries and witnessed by Secretary of State Marco Rubio. It also will help the U.S. government and American companies gain access to critical minerals needed for much of the world’s technology at a time when the United States and China are actively competing for influence in Africa. Analysts see the deal as a major turning point but don’t believe it will quickly end the fighting that has killed millions of people since the 1990s.