Just War (''jus ad bellum'') is a doctrine of war which teaches that a war is not just unless it is just, meaning it is defensive in nature either reclaiming things stolen or to castigate an offending person. | Just War (''jus ad bellum'') is a doctrine of war which teaches that a war is not just unless it is just, meaning it is defensive in nature either reclaiming things stolen or to castigate an offending person. |