Ban setter’s review, stop and leave (7)
I believe the answer is:
embargo
'ban' is the definition.
(I've seen this before)
'setter's review stop and leave' is the wordplay.
'setter' becomes 'me' (the setter of the clue).
'review' shows that the letters should be reversed in order.
'stop' becomes 'bar' (I've seen this before).
'and' is a charade indicator (letters next to each other).
'leave' becomes 'go'.
'me' back-to-front is 'em'.
'em'+'bar'+'go'='EMBARGO'
(Other definitions for embargo that I've seen before include "Legal stoppage of commerce" , "Order intended to prevent trade" , "Government trade ban" , "Block" , "Order forbidding ships to enter or leave port, and a ban on trade" .)