Update

The latest:

South Sudan is at peace.

The two warring factions, ethnic Nuer loyal to president Salva Kiir and ethnic Dinka loyal to vice-president Riek Machar, have signed a peace deal in the Sudanese capital of Khartoum.

The deal is focused heavily on details surrounding power-sharing, similar in structure to the document signed in 2015, which disintegrated a few months after its ratification.