AFRICANGLOBE - South Sudanese rebel leader Riek Machar, who fled to the Democratic Republic of Congo in August after fierce fighting, is being held in South Africa to stop him stirring up trouble, diplomatic and political sources said on Tuesday. Removing Machar from circulation would be a blow to his rebel SPLA-IO faction in its three-year war with President Salva Kiir’s mainstream SPLA, and could sway a conflict the United Nations has been sponsoring.