Yemeni gulf port (4)
I believe the answer is:
aden
'yemeni gulf port' 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 "Dean is in the Yemen, strangely" , "Red Sea port" , "Yemeni port" , "Yemeni gulf" , "Strange Dane to be in the Yemen" .)