Trump was more explicit on a recent Sunday interview show. He emphatically said that one side, the Palestinian, is at fault; only one side teaches their children to hate.
But in order to make a deal, both parties have to have confidence that the deal-maker is neutral.
He further stated that accomplishing a deal is next to impossible.
IMHO, he should make that same statement here.
Fact is...if you believe only one side teaches to hate, and that they are at fault...you cannot be neutral.