The cause wasn't the speech, it was ending the nuclear agreement and its associated multi-billion-dollar payoffs from the U.S. to Iran.
Which PDJT did right after the speech at the UN in which he told the Iranian People he was with them, and not the mullah's as Obama was.
Correcting myself from above: PDJT doesn't get just some modicum of credit here, I think his execution of his gut instincts gives him all the credit here.
The original poster of this thread asked a very relevant question at the top: what freedom loving individual does not want to see a free Iran?