IBTZ!
think its very hard to avoid the only conclusion that makes sense for this guy who, as a malignant narcissist, always hogs the center of the photo, where he stands beaming with pride for himself. He was performing an act of Islamic submission to the King of Saudi Arabia, as the keeper of the two Holy Places of Islam, and didnt realize that he would be caught on camera by a Spanish news company. It was a Muslim religious gesture. So, now he deliberately takes the opportunity to bow to another monarch in order to defuse the significance of that earlier video. He is merely bowing symbolically to monarchs, not bowing symbollically to the current leader of Islam, in order to show that he is still a good and loyal Muslim, not a Christian apostate as might appear from his election campaign.
Above was posted on another thread. I think this is true
intention of his bow. This is not good at all.