Castro's land (4)
I believe the answer is:
cuba
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">castro's land</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for cuba that I've seen before include "West Indian island" , "detached area" , "Island nation" , "Caribbean nation" , "Long rum-based drink" .)