Former rebel leader Riek Machar was sworn in as South Sudan's first vice president on Saturday after he agreed to form a unity government with his long-time rival President Salva Kiir
South Sudan rebels rejected on Sunday a government peace offer to return to a system of 10 states, dashing hopes of ending a six-year war that has left 380,000 dead.
South Sudan's exiled rebel leader Riek Machar arrived in Juba on Saturday in a bid to salvage a peace deal with less than a month to go until he is to form a government with President Salva Kiir.
South Sudan rebel leader Riek Machar will return to the capital Juba to celebrate a peace deal on Wednesday, his group said, more than two years after he fled the country after the collapse of an earlier accord.
South Sudan's vice president urged world governments Friday to put aside skepticism about Juba's commitment to a new peace deal following a string of failed agreements.
South Sudan offered to allow a rebel representative to join its government on Friday, but ruled out Riek Machar, saying they had "had enough" of the rebel leader after five years of civil war.
South Sudan's government said on Friday it had taken the last town before the main rebel base of Pagak, where thousands of civilians have fled to escape fighting near the border with Ethiopia.
South Sudan's former vice president and opposition leader Riek Machar has left the country for a neighbouring state, opposition officials said, weeks after he withdrew from the capital during fierce fighting with government troops.
South Sudan's President Salva Kiir fired six ministers allied to his long-time rival Riek Machar late on Tuesday, widening a political rift in the world's newest nation and drawing threats of more fighting.
At least 115 soldiers from South Sudan's rival factions were killed in gunbattles in the capital Juba, a military spokesman for the opposition said on Saturday, amid fears for a fragile peace process in a country still reeling from a two-year war.