evidence: Regarding the history of the Ilemi Triangle and its borders, see, for example, James Barber, Imperial frontier (Nairobi: East African Publishing House, 1968); [...] Kenya Ministry of Defence, The Kenya Sudan Boundary and the Elemi Triangle (Nairobi: Government of British East Africa, 1956), KNA DC/ISO/2/5/5; [...] N. Mburu, Ilemi Triangle (Dagenham, UK: Vita House, 2007);