Africa News Tonight - US Ambassador Linda Thomas-Greenfield had a blunt message for Sudan during a statement at the UN Security Council, saying, “I’m asking the security forces as directly as I can: … put down the guns and start talking.” More than 300 Ugandans are stranded amid chaos in Sudan, including students, workers and travelers in transit. Plus, Senegalese singer-songwriter Baaba Maal has been named a goodwill ambassador for the U.N. Convention to Combat Desertification. For this and more, stay tuned to Africa News Tonight!