Libreville is its capital (5)
I believe the answer is:
gabon
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">libreville is its capital</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 gabon that I've seen before include "W. Afr. equatorial state" , "Republic on the west coast of Africa" , "French spoken here" , "W. African country" , "state of Africa" .)