In a move that many observers believe will end years of civil strife, South Sudan's rebel leader Riek Machar has been sworn in as vice-president. Machar fled the country in 2013.
Thousands have been killed and millions displaced since South Sudan became independent in 2011 and descended into civil war, mainly among ethnic lines.
We talk about the prospects for peace with Brad Brooks-Rubin, director of policy for the Enough Project.