Cuba's Castro (5)
I believe the answer is:
fidel
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">cuba's castro</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for fidel that I've seen before include "The familiar Mr Castro" , "Cuba's chief, . . . . . Castro" , "Raul Castro's elder brother" , "Castro of Cuba" .)