January 15 - South Sudan accuses neighboring Sudan of "stealing" its oil exports.[4]
January 20 - The United Nations says 120,000 people in South Sudan required aid amid tribal fighting.
February
February 2 - The People's Republic of China asks for assistance from South Sudan to obtain the release of 29 Chinese workers held captive in Sudan for five days.
February 11 - Sudan and South Sudan sign a non-aggression treaty.
February 14 - A Sudanese air strike hits the South Sudanese state of Unity, injuring four soldiers in a contested area.
March
April
May
June
July
August
September
The presidents of both Sudan and South Sudan meet in Ethiopia, and after days of discussion, agree on trade, oil and security deals.[5]