The oath that we take on the 2nd of December, nephew of the 18th Brumaire, is sacrosanct!
Diplomatic envoys are just as sacrosanct as heads of States.
In their eyes the king was not merely autocratic, but sacrosanct.
It is they who preach the doctrine of blood and iron; who hold that Csar is sacrosanct.
Evidently to her the spot on which Adrian sat was sacrosanct.