Gulf War missile (4)
I believe the answer is:
scud
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">gulf war missile</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for scud that I've seen before include "Move along smoothly - run before gale - Russian missile" , "(Of a cloud) move very quickly" , "Ballistic missile; sweep along" , "fly" , "Move fast, missile" .)