One is indeed morally obligated to kill. You are not making any sense. How can one go to war if one is not at least willing to kill?

The very word "war" express the idea of violent and mortal conflict.

To say that any proposed war is just is to imply that not waging such a war is unjust. Therefore to avoid the unjust act of remaining neutral, one must do the "just" thing by going to war. It is partly why conscientious objectors are almost universally despised in wartime, because they are perceived as moral, intellectual and emotional cowards.

Besides, by whose moral principles does one decide whether a proposed war is just or unjust? By Jesus' principles? As I said in my first post in this discussion, I could find nowhere in the Gospel ground for the idea of moral imperative to kill, which is what one is obligated to do in war. That is how wars are won: principally by killing people to the point where they've had enough and surrender (Japan) or to the point of complete annihilation.