Leader ordered liar to die (9)
I believe the answer is:
Here is my best explanation:
'leader' is the definition.
(I've seen this before)
'ordered liar to die' is the subsidiary indication.
'ordered' indicates anagramming the letters.
'liartodie' anagrammed gives 'editorial'.
(Other definitions for editorial that I've seen before include "Newspaper opinion piece", "Article giving opinion of a newspaper", "Leading article", "Chief newspaper article", "Opinion article", "bit of paper", "Paper's opinion piece", "Newspaper article - "I led a riot" (anag)", "Article giving a newspaper's opinion" and "Article expressing the views of the publication".)