Iberian: what brought about a state of agitation for him? (8)
I believe the answer is:
hispanic
'iberian' is the definition.
(relating to Spain - Spain is part of Iberia)
'agitation for him?' is the wordplay.
'agitation' becomes 'panic' (I've seen this before).
'for' says to put letters next to each other (I've seen this in other clues).
'him?' becomes 'his' (I can't explain this - if you can you should give a lot more credence to this answer).
'panic' put after 'his' is 'HISPANIC'.
'what brought about a state of' acts as a link.
This may not be correct. Some or all of it may belong to another bit of the clue.
(Other definitions for hispanic that I've seen before include "Maybe Iberian" , "Relating to Spain/Spanish" , "Relating to Spanish-speaking countries" , "I can ship (anag.)" , "Spanish" .)