Conflict in which counter charges may be decisive (5,3)
I believe the answer is:
price war
'in which counter charges may be decisive' is the definition.
Although both the answer and definition are singular nouns, I cannot see how one could define the other.
'conflict' is the wordplay.
I cannot quite understand how this works, but
'conflict' could be 'war' (war is a kind of conflict) and 'war' is found in the answer.
The remaining letters 'price' is a valid word which might be clued in a way I don't understand.
This explanation may well be incorrect...
Can you help me to learn more?
(Another definition for price war that I've seen is " Commercial competition".)