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(WASHINGTON) — Former President Donald Trump on Wednesday lashed out at Ukrainian President Volodymyr Zelenskyy and painted a picture of an “absolutely obliterated” Ukraine as the foreign leader is in the U.S. to present what he calls his “victory plan” to 2024 candidates and President Joe Biden.

At a campaign event in North Carolina, Trump went after Zelenskyy for “making little nasty aspersions” toward him.

While Trump didn’t elaborate on what the comments were, Zelenskyy was recently critical of Trump and his running mate, Ohio Sen. JD Vance, in an interview with The New Yorker.

Zelenskyy expressed doubt Trump knew how to end the Russia-Ukraine war despite Trump’s assertions, without detail or specifics, that the war never would have happened if he were president and he could end it on the first day of his new administration.

“My feeling is that Trump doesn’t really know how to stop the war even if he might think he knows how,” Zelenskyy told the magazine. “With this war, oftentimes, the deeper you look at it the less you understand. I’ve seen many leaders who were convinced they knew how to end it tomorrow, and as they waded deeper into it, they realized it’s not that simple.”

Zelenskyy also called Vance “too radical” over his position that Ukraine will likely have to cede territory taken by Russia. Zelenskyy said the senator’s “message seems to be that Ukraine must make a sacrifice.”

Trump, in his freewheeling stump speech on Wednesday, claimed Ukraine is “obliterated” with towns and cities gone that can “never be duplicated.” He said “millions and millions” were dead and accused Ukraine of “using young children and old men” as its military experiences a shortage of soldiers.

Trump continued to call Zelenskyy the “greatest salesman on Earth” amid his apparent criticism of the amount of aid the U.S. has given to Ukraine to help the nation fight President Vladimir Putin’s forces, and how Zelenskyy has used the aid.

“Those buildings are down. Those cities are gone. They’re gone. And we continue to give billions of dollars to a man who refuses to make a deal,” Trump said.

A day prior, at a campaign event in Georgia, Trump expressed little confidence Ukraine could win while praising Russia’s military capabilities.

“But we’re stuck in that war unless I’m president. I’ll get it done. I’ll get it negotiated. I’ll get out. We got to get out. Biden says we will not leave until we win. What happens if they win? That’s what they do, is they fight wars. As somebody told me the other day, they beat Hitler. They beat Napoleon. That’s what they do.”

Zelenskyy will hold meetings with President Biden and Vice President Kamala Harris on Thursday to present what his “victory plan.” The proposal includes specific figures and amounts of military assistance that he says Ukraine needs to force Russia to stop the war, as well as a list of certain diplomatic and political steps, a source close to Zelenskyy told ABC News.

Trump said last week that he would “probably” be meeting with Zelenskyy but now is not expected to meet with him while he is here in the U.S. this week, sources said, saying Trump’s plans were never firm.

House Speaker Mike Johnson, the top Republican on Capitol Hill, also won’t meet with Zelenskyy, a source familiar with the matter said Wednesday after a meeting had been previously announced. Johnson, who has a mixed record on Ukraine aid, has recently taken issue with Ukrainian Ambassador Oksana Markarova organizing a tour for Zelenskyy of an American munitions manufacturing plant in election battleground Pennsylvania.

Vance on Wednesday, during a call with reporters hosted by the Republican National Committee, was asked if he sees an opportunity to discuss with Zelenskyy how a Trump-Vance administration would approach the conflict and if he believed Ukraine should cede land in exchange for the war to end.

Vance said “everything’s going to be on the table” in negotiating an end to the war and that “the biggest problem here is that this war has distracted and consumed a lot of resources at a time when Americans are suffering.”

“I think that the president has said very clearly that, first of all, Russia would have never invaded Ukraine if he had been president, and he’s gonna negotiate an end to the conflict,” he said.

While Trump and Vance voiced skepticism of how much further assistance should be given to Ukraine, President Biden, in his final address at the United Nations General Assembly, urged world leaders not to relent on the issue.

“The world now has another choice to make: Will we sustain our support to help Ukraine win this war and preserve its freedom, or walk away, let aggression be renewed and a nation be destroyed? I know my answer,” Biden said. “We cannot grow weary. We cannot look away and we will not let up on our support for not Ukraine.”

ABC News’ Katherine Faulders, Hannah Demissie and Lauren Peller contributed to this report.

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