Power grab (6)
I believe the answer is:
putsch
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">power grab</span>' is the definition.<br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for putsch that I've seen before include "Revolutionary uprising" , "Sudden illegal acquisition of power" , "Violent attempt to overthrow a government" , "Violent attempt to seize power" , "A sudden political uprising" .)