Talks to resolve tension between Sudan and South Sudan have entered a second day, after negotiations Tuesday ended in shouting.
A VOA correspondent at the scene, in Ethiopia's capital, Addis Ababa, reports the talks are in a delicate stage as the sides try to resolve simmering disputes over oil, borders, and citizenship issues.
Talks on the status of southerners living in the north turned into a shouting match Tuesday. A participant said those particular negotiations are probably over for now, though the sides continue to discuss the oil and boundary disputes.
South Sudan has accused Sudan of charging excessive fees for the use of oil pipelines that run north to the Red Sea.
On Wednesday, South Sudan's oil minister, Stephen Dhieu Dau, said the land-locked country is considering building a temporary pipeline along the Nile river to the capital, Juba. The oil would then be transported on trucks to ports in Kenya and Djibouti.
The dispute over fees has prompted South Sudan to shut down all oil production, a move analysts say is likely to financially hurt both countries.
On Tuesday, the U.N. Security Council expressed "grave concern" about cross-border violence between the two Sudans. The world body said it has reports of troop movements and airstrikes along the poorly-defined border, and demanded that all parties cease military operations in the area.
The council also urged the countries to respect a non-aggression pact they signed less than a month ago.
The African Union is mediating what are scheduled to be 10 days of talks between Sudan and South Sudan.
Much of the tension between the countries stems from the oil dispute. The South took over most Sudanese oil production when it became independent last July.
The sides also disagree on borders of the oil-producing Abyei region, and accuse each other of supporting the other's rebel groups.
Some information for this report was provided by AFP and Reuters.