Top Democrats across both chambers condemned President Donald Trump for threatening that “a whole civilization will die tonight” in Iran, with some pushing for Trump’s immediate removal from office over the threat and his conduct of the war.

House Minority Leader Hakeem Jeffries (D-NY) and other members of Democratic leadership including Reps. Katherine Clark (D-MA), Pete Aguilar (D-CA), Ted Lieu (D-CA), Joe Neguse (D-CO) and Suzan DelBene (D-WA), issued a statement calling Trump “unhinged” and saying that he risks bringing the country “into World War III” unless Congress reconvenes to vote to bring the war to an end.

“For years, Republicans have enabled and excused Donald Trump’s deeply dangerous and extreme behavior. Enough is enough,” the leaders said. “Our brave men and women in uniform have been put into harm’s way in the Middle East. Over a dozen have already been killed and hundreds injured. Gas prices are skyrocketing, the cost of living in America is out of control and billions of taxpayer dollars are being wasted on a reckless war of choice.”

In another joint statement, Senate Minority Leader Chuck Schumer (D-NY) and Sens. Chris Coons (D-DE), Jeanne Shaheen (D-NH), Jack Reed (D-RI) and Brian Schatz (D-HI), who are the top Democrats on several relevant committees and subcommittees, similarly condemned Trump’s comments, saying they indicate an intent to commit war crimes.

“This is not strength. Intentionally destroying the power, water, or basic infrastructure upon which tens of millions of civilians depend to punish the very civilians who suffer at the hands of the Iranian regime would constitute a war crime, a betrayal of the values this nation was founded on, and a moral failure,” the lawmakers said. “It’s unconscionable to threaten the lives of so many people — grandparents, children, families — simply because they were born in Iran.”

They said that Trump’s comment “makes Americans less safe, further destabilizes our nation and economy, and puts at greater risk U.S. service members,” as well as makes a diplomatic solution — ”the only viable solution to this war” — harder to achieve.

In a separate statement, Rep. Greg Meeks (D-NY), the ranking member of the House Foreign Affairs Committee, also said that Trump’s threat constitutes a war crime and an illegal action under international law which risks tens of millions of Iranian civilians, and potentially catastrophic after-effects.

“At this critical moment, the United States must pursue immediate de-escalation and a coordinated diplomatic strategy with our allies. We cannot allow Iran to simply reset to a dangerous status quo — but the answer is not to threaten war crimes and isolate us from every partner we need to end this conflict,” Meeks said. Trump’s threat is “recklessness that America and the region will pay for long after this president is gone,” he added.

Rep. Jared Moskowitz (D-FL), who prior to the war was one of the few Democrats who said he would oppose a war powers resolution — though he ultimately voted for it after the war began — demanded that the House immediately reconvene for a war powers vote. Moskowitz’s comments are a sign that Trump’s latest comments have crossed a line even for some of the most hawkish Democrats in the House.

“Speaker Johnson must immediately reconvene the House to vote on a war powers resolution. It’s beyond clear we are at war,” Moskowitz said. “The Speaker’s legacy will be that he made Congress so irrelevant that a president can threaten to wipe out a civilization while Congress is on vacation.”

Jeffries said Democrats plan to bring up another war powers resolution to halt the conflict in Iran, which stands a stronger chance of passing than a previous one, when the House returns from its recess. At least some of the Democrats who voted against the previous resolution are expected to support this one, and a small number of additional Republicans may join them.

Rep. Henry Cuellar (D-TX), one of four House Democrats who voted against the previous war powers resolution on the war in Iran last month, announced he will now support such an effort because the administration has failed to provide adequate answers about its goals and its exit strategy.

“[W]e must be careful with the language we use. Strength and destruction are not the same,” Cuellar added. “When the United States echoes the rhetoric of its adversaries, we risk weakening the values that have long defined our leadership.”

Several Democrats have described Trump’s comments as a threat to commit genocide.

Trump’s threat has also prompted growing calls from at least 70 House Democrats for his removal from office, either through impeachment or the invocation of the 25th Amendment, which allows the involuntary removal of a president from power if he is mentally or physically unfit to govern.

Sens. Ed Markey (D-MA) and Ron Wyden (D-OR) joined those calls.

“Donald Trump is deranged,” Wyden said. “He must be impeached and removed from office. Republicans who don’t stop him will have blood on their hands, and anyone who carries out an order to bomb civilian targets will be complicit in war crimes and will be held accountable.”

Markey called the president “unstable and a clear and present danger, not just to the American people but to the world” and said he “must be removed from office before he causes incalculable and unfathomable harm.” He said that a war powers resolution to stop the war is now insufficient to address the situation.

A small number of Republicans are also airing concerns with Trump’s threat.

Sen. Lisa Murkowski (R-AK), one of the few Republicans who has been openly skeptical of the war effort in Iran, said that Trump’s threat “cannot be excused away as an attempt to gain leverage in negotiations with Iran.”

“This type of rhetoric is an affront to the ideals our nation has sought to uphold and promote around the world for nearly 250 years. It undermines our long-standing role as a global beacon of freedom and directly endangers Americans both abroad and at home,” Murkowski said, calling for deescalation by both Trump and Iran, and insisting that the U.S. must draw a distinction between the Iranian regime and the Iranian people.

Rep. Nathaniel Moran (R-TX) said that, while he has supported the war thus far, “I do not support the destruction of a ‘whole civilization.’ That is not who we are, and it is not consistent with the principles that have long guided America.”

“[W]hat sets America apart is not only our strength, but how we use it. Our nation has always conducted military operations for just causes and through just and moral means. This must continue in the future; otherwise we forfeit our legitimacy to lead the world,” Moran said. “[H]ow we protect the lives of the innocent is just as important as how we engage the enemy.”

Rep. Kevin Kiley (I-CA), who recently left the Republican Party but remains part of the GOP caucus and has generally been hawkish on Iran, said that the U.S. “does not destroy civilizations. Nor do we threaten to do so as some sort of negotiating tactic.”

“Congress has a responsibility to conduct oversight with respect to ongoing military operations and our obligations under both U.S. law and international agreements to which we are a signatory,” Kiley said.