Funny, you left out this part of what he said:
"However, now that we have Complete and Total Regime Change, where different, smarter, and less radicalized minds prevail, maybe something revolutionarily wonderful can happen, WHO KNOWS?”
Trump's style often includes maximum pressure and bluster as most sane people realize. The statement was meant for the Mullahs and the evil regime not the Iranian people. If you were a true Trump supporter you'd realize this instead of siding with his opponents. 'Nice talk' does not work with these radical last century Islamists.