Riek Machar Teny Thurgon is the full name of a man whose career has been characterised by raw ambition for power and a knack for armed rebellion.
On July 23, 2013, Machar, then vice president of South Sudan was among cabinet ministers fired by President Salva Kiir.
This brought tension, especially among Machar's supporters.
President Kiir implicated Machar in a failed coup attempt on December 15, 2013.
But Machar said that the coup claim was a fabrication by President Salva Kiir.
But is Riak Machar a victim or a villain?
He is a man whose action has suddenly brought back the old African story of armed rebellion and civil strife.