South Sudan likely to face sanctions over failure to sign peace deal The United States and Britain have pushed for UN sanctions to punish South Sudan's government over its failure to sign a peace deal as the Security Council weighs its next move to help end the nearly two years. South Sudan rebel chief Riek Machar signed the power-sharing agreement late on Monday, but President Salva Kiir only initialled part of it saying he would return to the table early September to finalise the accord. NEWS24