Clearly not the way to peace (7)
I believe the answer is:
warpath
'peace' is the definition.
The definition and answer can be both feelings as well as being singular nouns.
Perhaps they are linked in a way I don't understand?
I can't explain the rest of the clue.
Can you help me to learn more?
(Other definitions for warpath that I've seen before include "On the - means angry" , "Route taken by militant Red Indians" , "On this one is pursuing troublemakers" , "One's heading for conflict when on it" , "Road to battle" .)