Yeah, this is what makes one legal and the other one not. I suppose that in your opinion, being legal and following rules of war makes it better and I would agree, it seems reasonably better. But is it good though ? To my eyes, killing and spreading terror remains bad, legally or not. If we add some other parameter, it may even be worse to do it legally : the scale of destruction is far worse when a violent group is legal (and so financed and supported by whole countries).

The result of the analysis depends on what parameters you choose : is it legal ? Is it big ? What are the motives ? You can choose what you want, and that’s probably why we (I assume this here) have different opinions. My wonder is : why should we focus mostly or entirely on the legal aspect/parameter when analysing things like violence and power ?

(If i misunderstood what you said, sorry by advance)