Translation: “You bowed to the last King, now bow to ME!!!”
Actually, it is because the Current Occupant has chosen a side to take in the Sunni-Shi’ite schism in Islam - he has selected the Shi’a as the winners, and the Saudi Arabian Sunnis can go hang.
The Saudis recognize a disrespectful attitude when they see one. The new Saudi King no longer stands aside in the face of Shi’ite provocations.