Donald Trump is ramping up his threats against Iran … calling its leaders “deranged scumbags” and warning them to brace for what’s coming today.

Trump fired off the message in the early hours of Friday morning … declaring the U.S. is “totally destroying the terrorist regime of Iran” — militarily, economically, and more.

He touts, “Iran’s Navy is gone, their Air Force is no longer, missiles, drones and everything else are being decimated,” and brags the country’s leaders have been “wiped from the face of the earth.”