New wars or old weapons (6)
I believe the answer is:
arrows
'old weapons' is the definition.
'arrows' can be an answer for 'weapons' (arrow is a kind of weapon). I am not sure about the 'old' bit.
'new wars or' is the wordplay.
'new' indicates anagramming the letters.
'wars'+'or'='warsor'
'warsor' anagrammed gives 'ARROWS'.
Can you help me to learn more?
(Other definitions for arrows that I've seen before include "Missiles for the archer" , "Bolts that are shot" , "Pointed weapons" , "Local game" , "Quarrels, for example" .)