Yemen coastal city (4)
I believe the answer is:
aden
'yemen coastal city' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for aden that I've seen before include "Dane in seaport of Yemen" , "Dean is in the Yemen, strangely" , "somewhere on the Arabian peninsula" , "Strange Dane to be in the Yemen" , "Yemeni port" .)