For anyone who has paid the slightest attention to DJT's career, he's always felt slighted. Even in his own family, he was the second son, the trouble maker, only to recieve a bit of attention when his brother left the family business.
He was never accepted by NYC's "elite" society. Given that he's obviously a deeply troubled narcissist, it's not surprising what is happening today. Not just with Iran, but his entire presidency. He's basically attracting the same sort of people that resemble him