Russian leader before 1917 (4)
I believe the answer is:
tsar
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">russian leader before 1917</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 tsar that I've seen before include "specific authority" , "A former Russian ruler - rats to him" , "Russian monarch" , "Old leader" , "Tyrant" .)