evidence: Democratic Republic of Congo (DRC)-Uganda: Uganda rejects the DRC claim to Margherita Peak in the Rwenzori mountains and considers it a boundary divide; there is tension and violence on Lake Albert over prospective oil reserves at the mouth of the Semliki River; the Ugandan-origin Allied Democratic Forces (ADF; aka Islamic State of Iraq and ash-Sham in the DRC) operates on both sides of the border