Terrible Russian ruler? (4)
I believe the answer is:
ivan
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">terrible russian ruler</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for ivan that I've seen before include "One Day in the Life of - Denisovich (Solzhenitsyn)" , "Russian, say" , "- - the Terrible (Czar)" , "Fellow" , "A Russian emperor, quite Terrible" .)