Leader let independent radio broadcast (9)
I believe the answer is:
editorial
'leader' is the definition.
(type of newspaper article)
'let independent radio broadcast' is the wordplay.
'independent' becomes 'i'.
'broadcast' indicates an anagram (letters scattered or cast around).
'let'+'i'+'radio'='letiradio'
'letiradio' anagrammed gives 'EDITORIAL'.
(Other definitions for editorial that I've seen before include "Chief newspaper article" , "Newspaper article - "I led a riot" (anag)" , "paper item" , "bit of paper" , "Newspaper opinion piece" .)