Fight with a Republican (3)

I believe the answer is:

war

'fight' is the definition.
(warring is a kind of fighting)

'with a republican' is the wordplay.
'with' becomes 'w' (abbreviation).
'republican' becomes 'r' (abbreviation).
'w'+'a'+'r'='WAR'

(Other definitions for war that I've seen before include "Open hostility" , "Fight" , "Major conflict" , "State of armed struggle" , "Period of hostilities" .)

I've seen this clue in The Times.

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