It might be too late for Trump to join Israel now. The forces being content with the existence of the mullah regime have had time to fire up their propaganda machine and by that made Trump hesitate when being challenged by the triads of antagonists in Russia, Iran….and the villain in Turkey.
Strategically it was unwise to attack Iran without securing American support before the attack. Also it was an act of weakness on Trump’s part not to be able to tame Bibi, and/or, not clearly say that we will stand by Israel.