Helping Iran to reform (6)
I believe the answer is:
ration
'helping' is the definition.
(a ration is a serving or helping)
'iran to reform' is the wordplay.
'reform' indicates anagramming the letters (letters in a new form).
'iran'+'to'='iranto'
'iranto' anagrammed gives 'RATION'.
(Other definitions for ration that I've seen before include "A measured portion in times of scarcity" , "Fixed restricted allowance" , "A fixed allowance in times of scarcity" , "Restricted share" , "Limit quantity as of food during scarcity" .)