South Sudan: five things to know

South Sudan, where the government on Monday declared famine in some parts of the country, is mired in an economic crisis due to a devastating civil war.Independent since 2011, the world's newest country was engulfed by civil war in 2013 after President Salva Kiir accused his rival and former deputy Riek Machar of plotting a coup against him.Oil production -- from which South Sudan gained 98 percent of its revenues on its independence five-and-a-half years ago -- has plummeted by more than half a