evidence: South Sudan-Kenya: two thirds of the boundary that separates Kenya and South Sudan's sovereignty known as the Ilemi Triangle has been unclear since British colonial times; Kenya has administered the area since colonial times; officials from Kenya and South Sudan signed a memorandum of understanding on boundary delimitation and demarcation and agreed to set up a joint committee; as of July 2019, the demarcation process was to begin in 90 days, but was delayed due to a lack of funding South Sudan-Sudan: present boundary represents 1 January 1956 alignment, which clearly placed the Kafia Kingi area (adjacent to Central African Republic) within South Sudan as shown on US maps although it is mostly occupied by Sudan; final alignment pending negotiations and demarcation; the final sovereignty status of Abyei Area pending negotiations between South Sudan and Sudan; clashes continue in the oil-rich Abyei region; the United Nations interim security Force for Abyei (UNISFA) has been deployed since 2011, when South Sudan became independent, Sudan accuses South Sudan of supporting Sudanese rebel groups