Democratic Republic of Congo: Background and U.S. Relations [Updated April 3, 2019] [open pdf - 1MB]
From the Document: "The United States and other donors have focused substantial resources on stabilizing the Democratic Republic of Congo (DRC) since the early 2000s, when 'Africa's World War'--a conflict that drew in multiple neighboring countries and reportedly caused millions of deaths-- drew to a close. DRC hosts the world's largest U.N. peacekeeping operation and is a major recipient of donor aid. Conflict has nonetheless persisted in eastern DRC, prolonging instability and an enduring humanitarian crisis in Africa's Great Lakes region. New unrest erupted as elections were repeatedly delayed past 2016, their scheduled date, leaving widely unpopular President Joseph Kabila in office. Security forces brutally cracked down on protests, while new conflicts emerged in the central Kasai and southeastern Tanganyika regions, possibly fueled by political interference. An Ebola outbreak in the east has added to DRC's challenges."
CRS Report for Congress, R43166
Congressional Research Service: https://crsreports.congress.gov/