Cuban capital (6)
I believe the answer is:
havana
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">cuban capital</span>' is the definition.<br/ ><span class="explanation-format__explanation">(capital of Cuba)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for havana that I've seen before include "Smoke" , "Caribbean capital" , "city" , "Capital of Cuba" , "Fine cigar" .)