The US ambassador to the United Nations, Nikki Haley, was evacuated from a UN camp for displaced people in South Sudan today because of a demonstration against President Salva Kiir.<br/>'<br/>Shortly after Haley left the camp, UN security guards fired tear gas to disperse the crowd of more than 100 residents who looted and destroyed the office of a charity operating there. <br/><br/>Haley, in the middle of a three-country African visit, met earlier today with Kiir over the country's long civil war.<br/>'<br/>Speaking later to UN station Radio Miraya, Haley said she warned Kiir that the US no longer trusted South Sudan's government and was no longer prepared to wait for change. The United Nations has confirmed the incident<br/>