I am extremely skeptical of this claim, but I thought I might look at the book. It is published in Hebrew. I do not know if it will be translated into other languages...
And, if Trump did know, he would have somehow worked that into his presidential campaign and a reason to re-elect him.
Sort of like:
“Meeting with us very, very soon. Very good people on both sides,..well maybe people on one side. We’ll have to see. They are staying at the Trump International Hotel in Washington, the absolute best place. We are looking very strongly at renaming it Trump Intergalactic Hotel”.