Diplomat's skill (4)
I believe the answer is:
tact
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">diplomat's skill</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 tact that I've seen before include "Sensitivity (in dealing with others)" , "Understanding" , "measure of diplomacy?" , "Consideration in dealing with others" , "Delicacy of feeling, skill in saying the right thing" .)