Result of using tight controls on Middle Eastern leaders (7)
I believe the answer is:
outcome
'result' is the definition.
(synonyms)
'of using tight controls on middle eastern leaders' is the wordplay.
'leaders' suggests taking the first letters.
The first letters of 'of using tight controls on middle eastern' is 'OUTCOME'.
(Other definitions for outcome that I've seen before include "End result" , "Cute moo (anag.)" , "Eventuality" , "answer" , "Consequence, effect" .)