Its capital is Kampala (6)
I believe the answer is:
uganda
'its capital is kampala' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for uganda that I've seen before include "East African country, capital Kampala" , "East African republic" , "Country bordering Lake Victoria" , "part of Africa" , "E. African country" .)