Crossword Genius

A bet on who might win the war? (5)

Ross

I believe the answer is:

wager

I'm a little stuck... Click here to teach me more about this clue!

'a bet on who' is the definition.
'wager' can be an answer for 'a bet' ('wager' can be a synonym of 'bet'). I am not sure about the rest of the definition.

'win the war?' is the wordplay.
'win' becomes 'w' (abbreviation in sport).
'the war?' becomes 'ager' (I can't justify this - if you can you should give a lot more credence to this answer).
'w'+'ager'='WAGER'

'might' is the link.

Can you help me to learn more?

(Other definitions for wager that I've seen before include "act for "The Gamblers"?" , "Punt" , "Risk; stake" , "stake required" , "better to put this on?" .)

I've seen this clue in the Evening Standard.
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