Violence in South Sudan may disrupt flow of southern oil to Khartoum costing Sudan about 12 percent of its budget.
Hundreds of people have been marching for peace in South Sudan’s capital, Juba. They want to see an end to fighting between the army and forces loyal to deposed Vice President Riek Machar.
Up to 1,000 people have been killed in three weeks of violence in the country, and talks in neighbouring Ethiopia have stalled.
Al Jazeera’s Haru Mutasa reports from Juba.