Bellicose rave by editor is called for (9)
I believe the answer is:
warranted
'is called for' is the definition.
(I've seen this in another clue)
'bellicose rave by editor' is the wordplay.
'bellicose' becomes 'war' (I can't justify this - if you can you should give a lot more credence to this answer).
'rave' becomes 'rant' (synonyms).
'by' is a charade indicator (letters next to each other).
'editor' becomes 'ed' (abbreviation).
'war'+'rant'+'ed'='WARRANTED'
Can you help me to learn more?
(Another definition for warranted that I've seen is " Justified or guaranteed".)