Disputes - international:
South Sudan-Sudan boundary represents 1 January 1956 alignment, final alignment pending negotiations and demarcation; final sovereignty status of Abyei Area pending negotiations between South Sudan and Sudan; periodic violent skirmishes with South Sudanese residents over water and grazing rights persist among related pastoral populations along the border with the Central African Republic; the boundary that separates Kenya and South Sudan's sovereignty is unclear in the "Ilemi Triangle," which Kenya has administered since colonial times
Refugees and internally displaced persons:
refugees (country of origin): 21,000 (mostly from Democratic Republic of the Congo and Ethiopia)
IDPs: 80,000 (2010)