The president of the United States threatens genocide (original):

A whole civilization will die tonight, never to be brought back again. I don’t want that to happen, but it probably will. 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? We will find out tonight, one of the most important moments in the long and complex history of the World. 47 years of extortion, corruption, and death, will finally end. God Bless the Great People of Iran!

Posted on “Truth” Social at 5:06 am, because the president of the United States has nothing better to do at that hour.

JD Vance followed up later (in a press conference with Hungarian dictator Viktor Orbán):

We have tools in our toolkit that we so far haven’t decided to use. Trump can decide to use them, and he will decide to use them if the Iranians don’t change their course.

The White House found it necessary to deny that was a threat to use nuclear weapons.

I won’t purport to know which mechanism the president of the United States plans to use to kill millions of people, but it seems to me the method matters less than the act itself.