US officials who watch South Sudan are sounding an alarm that the country is increasingly at war with itself.
South Sudan's President Salva Kiir recently sacked his entire cabinet, including his main political rival.
And South Sudanese soldiers last month attacked their own citizens in a rural area called Jonglei state where some 300 people died in ethnically-motivated fighting.
This week authorities arrested an official based in Jonglei, Gen. James Otong, for human right abuses.
Anchor Marco Werman talks with Gayle Smith, President Obama's point person on South Sudan and a senior director at the National Security Council.