South Sudan

South Sudan's government refused to sign a peace deal with rebels Monday despite the threat of international sanctions, but will return to finalise an agreement within 15 days, mediators said. Rebel chief Riek Machar however said he had signed a deal, and called on President Salva Kiir to join. The world's newest nation is in the throes of a dire humanitarian crisis, with more than 2.5 million people facing severe food shortages and two million driven from their homes.VIDEOGRAPHIC