Unelected Head of State visits a European port (4)
I believe the answer is:
acre
'port' is the definition.
(I've seen this before)
'unelected head of state visits a european' is the wordplay.
I cannot really see how this works, but
'a' is present in the answer.
'european' could be 'e' (abbreviation e.g. EU) and 'e' is located in the answer.
'head of state' could be 'cr' (short for Carolus Rex ie King Charles) and 'cr' is found within the answer.
No letters remain.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for acre that I've seen before include "Unit of land measurement" , "region of ground" , "Muslims here besieged" , "0.405 of a hectare" , "once occupied by Crusaders" .)