If we're doing it for those reason, sure, go ahead as long as you don't weaken society. An arbitrary line is that society is good. If you Torture and it causes

If we're doing it for those reason, sure, go ahead as long as you don't weaken society. An arbitrary line is that society is good. If you Torture and it causes civil unrest to the degree that it destabilizes an otherwise productive society, then you should not do it.