ADDIS ABABA, Ethiopia — President Salva Kiir of South Sudan and the rebel commander Riek Machar signed another cease-fire agreement on Monday, edging them closer to a final deal to end a 15-month conflict that has ravaged the new country, mediators said.
African diplomatic sources said the agreement, which was not immediately made public, sets out how the two leaders would share power once they formed an interim government. It proposes that Mr. Kiir would remain president while Mr. Machar would become vice president, the sources said.
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Human rights groups have said both factions are responsible for ethnic killings and other abuses, driving the nation to the brink of famine.
A version of this article appears in print on February 2, 2015, on page A5 of the New York edition with the headline: Rebels Agree to Cease-Fire in South Sudan. Order Reprints| Today’s Paper|Subscribe
