Angolan opposition chief hopes for election success as he steps down Angola's opposition chief steps down this week after leading the party for 16 years, contending that the former rebel movement is on track to winning power. Isaias Samakuva, 73, took the helm of UNITA in 2003, a year after its founder Jonas Savimbi was killed in battle with government troops.\\n IMAGES AND SOUNDBITES of an AFP interview with Isaias Samakuva