Israeli port area (4)
I believe the answer is:
acre
This clue is a double definition.
'israeli port' is the first definition.
(I've seen this before)
'area' is the second definition.
(I've seen this before)
(Other definitions for acre that I've seen before include "Four roods - Israeli port" , "region of ground" , "Muslims here besieged" , "amount of land" , "once occupied by Crusaders" .)