Those in charge of hostilities produce explosives in torpedoes (8)
I believe the answer is:
warheads
'explosives in torpedoes' is the definition.
'warheads' can be an answer for 'explosives' (warhead is a kind of explosive). I am not certain of the 'in torpedoes' bit.
'those in charge of hostilities' is the wordplay.
I cannot really see how this works, but
'hostilities' could be 'war' (hostilities between nations) and 'war' is located in the answer.
The remaining letters 'heads' is a valid word which might be clued in a way I don't see.
This explanation may well be incorrect...
'produce' is the link.
Can you help me to learn more?
(Another definition for warheads that I've seen is " Explosive parts of missiles".)