Justified military action – spoke violently (9)

I believe the answer is:

warranted

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'justified' is the definition.
('warrant' can be a synonym of 'justify')

'military action spoke violently' is the wordplay.
'military action' becomes 'war' (war is a kind of military action).
'spoke violently' becomes 'ranted' (ranting is a kind of speaking. I am not sure about the 'violently' bit.).
'war'+'ranted'='WARRANTED'

Can you help me to learn more?

(Another definition for warranted that I've seen is " Justified or guaranteed".)

I've seen this clue in The Guardian.

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