Alexander's excuse for the attack was a weak one.
A very weak one at that.
Because although a higher noble could attack a lesser noble for refusing him, the main caveat to that rule was that it had to be sanctioned by the king.
Or else any bigger noble could take over a smaller noble using all sorts of excuses.
Now, this would be too big a problem as Ptolomy would not mind Alexander attacking rebel nobles.
He had even given Alexander prior permission to punish any nobles under him without needing to seek Ptolomy's council first.
But the little snag with this was, firstly, it was still undecided who was the king of Adhania, Ptolomy, or Amenheraft, with the matter being left in limbo for the time being.