-He is taunting Obama on the Rezco matter which goes to Saudi prince money for schooling which goes to Saudi prince donation to Harvard which goes to Saudi involvement/control of OPEC for which Trump has a stated dislike. I don’t have any idea of what Trump thinks of a POTUSA bowing to the Saudi king but I believe Trump smells something rotten.
The Saudi connection is interesting because Trump too is very close to the Sandi’s, he has done business with them for many years, with many high level connections in the royal family. It is entirely possible that someone there was willing to spillthe beans to Trump