I think the takeaway is that just war is simply a part of the debating furniture. You're always going to talk about it as if it's the thing that decides whether

I think the takeaway is that just war is simply a part of the debating furniture. You're always going to talk about it as if it's the thing that decides whether we do it or not, but realpolitik is what's actually deciding. We decide we need to invade someplace, then we massage the message to say it was just. That doesn't mean anything at all is possible of course, there's a debating window offered by cultural history as to what we might be able to use as an excuse.