Part of Iberia (5)
I believe the answer is:
spain
'part of iberia' is the definition.
(I know that Spain is part of Iberian Peninsula)
This is the entire clue.
(Other definitions for spain that I've seen before include "Kingdom" , "country of mostly dry mountains, going by air" , "It pains one to be out in this country" , "Iberian 4" , "EU country" .)