South Sudan's government on Tuesday slammed a peace proposal they are now under intense diplomatic pressure to sign after rebels agreed to the deal to end the country's brutal civil war.

"We strongly believe that this document cannot save the people of South Sudan," Information Minister Michael Makuei told reporters as President Salva Kiir returned home from peace talks in Ethiopia. "It is a sellout, and we will not accept it," the minister said, adding the government would now discuss the deal with the people for 15 days.