"...it is not the law that armed people participating in that kind of conflict cannot commit murder. An aggressive killing, other than in self-defence, in the course of such conflict is murder. There is no exception for such a situation."
"If people join, as it were, a frontline where you have opposing armed forces facing each other then you may think they may kill aggressively; in other words, not in self-defence, or in self-defence of themselves or their colleagues, and it is jolly difficult to tell in advance which it is going to be. So if you come to the conclusion that the only sense in which the defendant was encouraging killing was that he was encouraging people to go and join a frontline of that kind, facing another armed body, you may think that you really cannot be sure that what he was encouraging would necessarily extend to include murder; that is to say, killing beyond self-defence. Similarly, you may think that if what he was encouraging went no further than encouraging people to go to Palestine, and if there was an attack on fellow Muslims, defend them from an imminent attack, then of course the same would apply. That would be an encouragement of self-defence. It is not an offence."