Hollywood icon Robert De Niro didn’t mince words when he slammed Donald Trump as a fool and warned that he could ruin the country.

Now, Trump is firing back — with a blistering threat of his own.

While Donald Trump delivered his record-breaking State of the Union address on February 24 — a marathon speech that ran nearly one hour and 47 minutes — a very different event was unfolding across town.

At the counter-programmed “State of the Swamp,” attended by figures like Don Lemon and Mark Ruffalo, the headline speaker was none other than Robert De Niro — and he did not hold back.

The 82-year-old actor, who has criticized Donald Trump for nearly a decade, doubled down during a recent appearance on MSNBC’s The Best People with Nicole Wallace podcast.

“He’s an idiot. We gotta get rid of him. He’s gonna ruin the country,” De Niro said.

In the same interview, he warned, “The story is our country, and Trump is destroying it, and who knows what his reasons are, but it’s sick, it’s f***** up. We have to save the country.”

At the alternative event, he described the president as “failing, flailing and desperate,” and in past remarks has labeled him a “buffoon,” an “enemy of this country,” and even a “vicious dictator.”

But this time, Trump fired back harder than ever.

In a lengthy Truth Social post, the president lashed out at the Goodfellas star, calling him “demented” and accusing him of suffering from “Trump derangement.” He went even further — suggesting deportation.

Referring to Democratic Reps. Ilhan Omar and Rashida Tlaib, who had protested during his speech, Trump wrote that they “should actually get on a boat with Trump Deranged Robert De Niro, another sick and demented person with, I believe, an extremely Low IQ, who has absolutely no idea what he is doing or saying — some of which is seriously CRIMINAL!”

He continued: “When I watched him break down in tears last night, much like a child would do, I realised that he may be even sicker than Crazy Rosie O’Donnell…”

Though De Niro was born in New York and is a lifelong American citizen, Trump’s comments about deportation stunned many observers and marked a dramatic escalation in their long-running feud.

The president ended his post by boasting:

“The good news is that America is now Bigger, Better, Richer, and Stronger than ever before, and it’s driving them absolutely crazy!”

Meanwhile, De Niro has remained firm in his stance.

“You have to lift people up,” he said emotionally during the podcast. “You have to bring them together. Period. You can’t divide people. You can’t win that way.”

But with Trump now publicly floating threats — even rhetorically — the clash between Hollywood’s most outspoken critic and the sitting president appears far from over.