South Sudan’s growing conflict reflects rivalry between president and his former deputy

By Sudarsan Raghavan, December 23, 2013

JUBA, South Sudan — They were an unlikely pair to lead the world’s newest nation — from different tribal groups and different regions, having taken vastly different paths to power. President Salva Kiir, a field commander with little formal education, was known for his black ­cowboy hat. His vice president, Riek Machar, had earned a doctorate in Britain and preferred Western suits.

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