Trade stoppage (7)
I believe the answer is:
embargo
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">trade stoppage</span>' is the definition.<br/ ><span class="explanation-format__explanation">(synonyms)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for embargo that I've seen before include "Ban on commerce - mob rage (anag)" , "Trading restriction" , "Government order imposing a trade barrier" , "Order intended to prevent trade" , "Ban or restraint on trade" .)