From Iranians we require resolution (6)
I believe the answer is:
answer
'resolution' is the definition.
('answer' can be a synonym of 'resolution')
'from iranians we require' is the wordplay.
'from' says the answer is hidden in the clue.
'ANSWER' can be found hidden inside 'iranians we require'.
(Other definitions for answer that I've seen before include "fit" , "Be satisfactory" , "Serve" , "Response to a question" , "Solution (to problem)" .)