Cuban leader (6)
I believe the answer is:
castro
'cuban leader' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for castro that I've seen before include "Man of Cuba" , "Cuban co-star" , "Actors in Cuba" , "Cuban leader, d. 2016" , "Fidel . . . . . .,retired Cuban leader" .)