It's not an obsession its a fact that every kalenjin knows. We dont have irrational gema fear of Somalis. We know Somali-Borana are our people.
Let me teach your history. When you say cushites...what do you mean. You simply mean people from Cush. Where is Cush? It's just the north of present day Khartoum. Present day Nubians (not Nuba) living in Sudan and Egypt are example of Cush people
About 2000 yrs ago - people living in cush empire - and Kalenjin living just below them in present day khartoum - moved south - first to Ethiopia - then to East Africa - Kenya, Uganda and Tanzania.
These were proto-Kalenjin and proto-cushite people.
Proto-cushite would later split into oromo and somalia. The kalenjin into their 10 subtribes.
Bantus arrived way later from Cameroun. Maasai and other plain nilotes (kenya speak) arrived after that from South Sudan...maasai/turkana/iteso ideally like kalenjin should be nilo-cushitic/hamitic people - intermixed nilotic people cushites.
The Luos - with all their noise - arrived about 500yrs in kenya - very recently
Your obsession and worship of the somali is relentless. Eti you share half root words but one group is nilotic and the other cushitic. Mind-blowing,at this rate you will change your name to a somali one Abdi pundit.
Eti somalis were first to occupy Kenya,again this is bar talk ,the land that is now north eastern was occupied by oromo-borana For many centuries before Somalis are just recently 150-200- years came in that land. Most names in Mandera are of a oromo borana origin.
You love zoomalis Abdi Pundit the question is,do they love kalenjins too as brothers?