WATCH: Trump Clashes With Zelensky Front of Reporters in Heated Exchange: 'Either You Make a Deal Or We're Out'

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President Donald Trump got in a heated exchange with Ukrainian counterpart Volodymyr Zelensky after the later said that Russian President Vladimir Putin's promises of being willing to move toward peace can't be trusted.

"You've got to be more thankful," Trump told Zelensky, adding that he is "gambling with World War III" and claiming that Putin never broke agreements with him.

"It's going to be very hard to do business like this, I tell you," Trump added before Zelensky got in an exchange with Vice President JD Vance over the matter. "Let's go litigate these disagreements rather than trying to fight it out in the American media when you're wrong."

"I think it's good for the American people to see what's going on. That's why I kept this going for so long. You don't have the cards. Your people are dying, you're running low on soldiers," Trump added before a visibly agitated Zelensky.

"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 added. Asked by press when leaving the Oval Office if they could negotiate after the exchange, Trump said "We'll see."

The heads of state were supposed to sign a deal centered on U.S. access to Ukraine's rare minerals, seen by observers as a first step toward potentially ending the war with Russia.

While an earlier U.S. request for $500 billion in potential revenues from Ukraine's natural resources has reportedly been dropped, Kyiv's push for security guarantees as part of the deal remains unresolved, something that was clearly seen at the meeting.

Zelensky has stressed the importance of including at least a "sentence" on security assurances, but Trump reiterated that such commitments should come from Europe, Ukraine's "next-door neighbor."

Tensions had risen over the past weeks as Trump and some top officials openly voiced their frustration with Zelensky, with the president even calling him a "dictator without elections." After the matter was seemingly solved, Trump was asked by a reporter if he still believed Zelensky was a dictator. "Did I say that? I can't believe I said that," Trump responded. However, relations have apparently gone back to being sour.