The capital of Eritrea (6)
I believe the answer is:
asmara
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">the capital of eritrea</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for asmara that I've seen before include "Capital of Eritrea" , "African capital" , "African city" .)