Washington. US President Donald Trump berated Ukrainian President Volodymyr Zelensky for being “disrespectful” Friday in an extraordinary Oval Office meeting, then abruptly called off the signing of a minerals deal with the United States that Trump said would have moved Ukraine closer to ending its war with Russia.

The astonishing turn of events could scramble affairs in Europe and around the globe. During his visit with Trump, Zelensky was expected to sign the deal allowing the US greater access to Ukraine's rare earth minerals and hold a joint news conference, but that plan was scrapped after the heated engagement between the leaders in front of the news media.

It's unclear what the blowup could mean for the deal that Trump insisted was essential to repay the US for the more than $180 billion in American aid sent to Kyiv since the start of the war. And it remains to be seen what, if anything, Trump wants Zelensky to do to get the deal back on track.

The Ukrainian leader left the White House shortly after Trump shouted at him, showing open disdain. Untouched salad plates and other lunch items were being packed up outside the Cabinet room, where the lunch between Trump and Zelensky and their delegations was supposed to have taken place.

The White House said the Ukraine delegation was told to leave.

“You’re gambling with World War III, and what you’re doing is very disrespectful to the country, this country that’s backed you far more than a lot of people say they should have,” Trump told Zelensky.

The last 10 minutes of the nearly 45-minute meeting devolved into a tense back and forth between Trump, Vice President JD Vance, and Zelensky, who had urged skepticism about Russia’s commitment to diplomacy, citing Moscow’s years of broken commitments on the global stage.

Zelensky’s main objective going into the sit-down had been to press Trump not to abandon his country and to warn against moving too closely to Russian President Vladimir Putin. Instead he got shouted at while Trump appeared to play up the drama for the cameras.

At one point, Zelensky said Putin had broken “his own signature” 25 times on ceasefires and other agreements and could not be trusted. Trump responded that Putin had not broken agreements with him and mostly ducked questions about offering security guarantees to Ukraine, saying he thought the minerals deal -- which is now on-hold -- would effectively end the fighting.

Things first got testy after Vance challenged Zelensky, telling him, “Mr. President, with respect, I think it’s disrespectful for you to come to the Oval Office to try to litigate this in front of the American media.” Zelensky tried to object, prompting Trump to raise his voice and say, “You’re gambling with the lives of millions of people.”

At another point, Trump declared himself “in the middle" and not on the side of either Ukraine or Russia in the conflict. He went on to deride Zelensky's “hatred” for Putin as a roadblock to peace.

“You see the hatred he’s got for Putin,” Trump said. “That’s very tough for me to make a deal with that kind of hate."

Following the meeting, Trump posted on his social media site that he had “determined” that Zelensky “is not ready for Peace.”

“He disrespected the United States of America in its cherished Oval Office. He can come back when he is ready for Peace,” Trump wrote.

Trump also suggested that the heated exchange was productive: “Much was learned that could never be understood without conversation under such fire and pressure. It’s amazing what comes out through emotion.”

Democrats immediately criticized the administration for the breakdown. Democratic Senate leader Chuck Schumer said Trump and Vance “are doing Putin’s dirty work.”

The testy discussion was especially surprising since it came a day after Trump struck a more conciliatory tone toward Ukraine, calling America’s support for the country against Russia’s invasion “a very worthy thing to do” and disclaiming any memory that he had called the Ukrainian leader a “dictator.”

Trump and Zelensky spoke politely, even with admiration, of each other for the first half hour of the meeting. But, when the Ukrainian leader raised the alarm about trusting any promises from Putin to end the fighting, Vance offered his strong rebuke for airing disagreements with Trump in public.

That instantly shifted the tenor of the conversation as Zelensky grew defensive and Trump and his vice president blasted him as ungrateful and issued stark warnings about future American support.

“It’s going to be a very hard thing to do business like this,” Trump said to Zelensky as the two leaders talked over each other about past international support for Ukraine.

Vance then interjected, “Again, just say thank you.”

Zelensky pushed back on Vance, telling him he's offered his appreciation “a lot of times" to the American people and the president. The Ukrainian leader after leaving the White House expressed his gratitude on social media.

“Thank you America, thank you for your support, thank you for this visit,” Zelensky wrote. “Thank you @POTUS, Congress, and the American people. Ukraine needs just and lasting peace, and we are working exactly for that.”

But administration officials were not satisfied with Zelensky and perceived a “hostility” with him and his body language in the Oval Office, according to a White House official. Trump also objected to the Ukrainian leader bringing up the issue of security guarantees when Trump made clear he wanted to focus on the minerals deal, said the official who requested anonymity to discuss internal deliberations.

Former President Joe Biden had also grown frustrated at moments with Zelensky for being insufficiently grateful for American support, according to former administration officials. But unlike Trump, Biden expressed his displeasure with Zelensky privately.

Trump seemed pleased that the scene was being recorded on camera. “I think it’s good for the American people to see what’s going on,” he added.

Trump also suggested that Zelensky should not be demanding concessions.

"You’re not in a good position. You don’t have the cards right now,” Trump said pointing his finger toward Zelensky. “With us you start having cards.”

Shortly before the meeting ended, Trump said, “This is going to be great television.”

As Ukrainian forces hold out against slow but steady advances by Russia’s larger and better-equipped army, leaders in Kyiv have sought to ensure any potential US-brokered peace plan would include guarantees for the country’s future security.

Many Ukrainians fear that a hastily negotiated peace -- especially one that makes too many concessions to Russian demands -- would allow Moscow to rearm and consolidate its forces for a future invasion after current hostilities cease.

Senator Lindsey Graham, a Trump ally who has advocated for Trump to keep up American support for Ukraine, told Fox News he wasn't confident that the Trump-Zelensky relationship could be repaired.

“I don’t know if you can ever do a deal with Zelensky anymore,” the South Carolina Republican said.

Fears that Trump could broker a peace deal with Russia that is unfavorable to Ukraine have been amplified by recent precedent-busting actions by his administration.

Trump held a lengthy phone call with Putin, and US officials met with their Russian counterparts in Saudi Arabia without inviting European or Ukrainian leaders -- both dramatic breaks with previous US policy to isolate Putin over his invasion.

Trump later seemed to falsely blame Ukraine for starting the war and called Zelensky a “dictator” for not holding elections after the end of his regular term last year, though Ukrainian law prohibits elections while martial law is in place. European leaders were quick to reinforce their support for Ukraine in the wake of the contentious Oval Office meeting.

European leaders were quick to reiterate their support for Zelensky and Ukraine.

In a post on X, EU Commission President Ursula von der Leyen said Zelensky's “dignity honors the bravery of the Ukrainian people."

“Be strong, be brave, be fearless,” she added. "You are never alone, dear President.”