Riek Machar, South Sudan ex-vice president, flees; fragile peace deal in limbo

South Sudan’s deposed vice president who’s now a rebel-opposition leader has fled for neighboring Congo, throwing the East African nation’s fragile peace deal further toward limbo just a few years after it was one of the Obama administration’s top foreign policy triumphs. Former Vice President Riek Machar – in hiding since early July when forces supporting…