The government and rebels in South Sudan have agreed to end fighting and form a transitional government within 60 days, Ethiopia says.
The regional IGAD bloc, mediating the conflict, has threatened sanctions if they fail to abide by the agreement.
It follows a rare meeting between President Salva Kiir and rebel chief Riek Machar in Addis Ababa, Ethiopia.
Previous deals to end the violence have been broken by both sides, compounding the worsening humanitarian crisis.
Thousands have now died in the conflict that started as a political dispute between Mr Kiir and Mr Machar, his sacked deputy, but escalated into ethnic violence.
More than a million people have fled their homes since fighting erupted last December.
Read more: http://www.bbc.co.uk/news/world-africa-27789771
Warning to the more gentle readers and lurkers - there is an upsetting picture in the full article.