The U.S. could withdraw from peace talks with Ukraine and Russia if the two sides show no progress, President Donald Trump says.

Trump made the comments during an interview on NBC's "Meet the Press" that aired Sunday, telling host Kristen Welker that there is "tremendous hatred" between Ukraine and Russia.

The president says he remains hopeful a peace deal is possible, but confirmed that the U.S. would not remain a mediator indefinitely.

"I do believe we're closer with one party. And maybe not as close with the other, but we'll have to see," Trump said. "Five thousand soldiers a week on average, are dying. They're not American soldiers. But I want to solve the problem."

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"How long do you give both countries before you're going to walk away?" Welker asked.

"Well, there will be a time when I will say, okay, keep going, keep being stupid," Trump replied.

"Maybe it's not possible to do," he added. "There's tremendous hatred. Just so you understand, Kristen, we're talking tremendous hatred between these two men and between, you know, some of the soldiers, frankly, between the generals, they've been fighting hard for three years. I think we have a very good chance of doing it."

The interview comes just days after Trump blasted Russian President Vladimir Putin, questioning whether his Russian counterpart has any interest in peace.

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Trump spoke up on social media last week after Russian forces launched missiles into Ukrainian cities.

"There was no reason for Putin to be shooting missiles into civilian areas, cities and towns, over the last few days," Trump wrote. "It makes me think that maybe he doesn’t want to stop the war, he’s just tapping me along, and has to be dealt with differently, through ‘Banking’ or ‘Secondary Sanctions?’ Too many people are dying!!!"

Secretary of State Marco Rubio also appeared to temper expectations for a major peace agreement between Ukraine and Russia last week.

Rubio argued it was "silly" to put a specific date or timeline on when the U.S. might pull out from mediation, but he said this will be "a very critical week."

Days later, the White House signed a rare earth minerals agreement with Ukraine, a months-long priority for Trump.

Caitlin Clark returned for her sophomore WNBA season with some jokes for her Indiana Fever teammates.

Sophie Cunningham posted a photo with her new Fever teammate Lexie Hull on Instagram on Friday ahead of their first preseason game against the Washington Mystics. The Fever acquired Cunningham from the Phoenix Mercury in the offseason.

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Ever the gamer, Clark had a message for the two women.

"Little less tanning. A little more bball ladies," Clark commented. The remark received more than 10,000 likes.

Cunningham had jokes of her own.

"The tan will come… everything else is perf," Cunningham wrote on Clark's photo.

Cunningham spoke highly of Clark as she joined the Fever.

"We've talked quite a bit in the past couple of months since I've gotten traded, and she's just a good human," Cunningham told Fox News Digital of Clark back in April. "I think she has humor to her, she has wit to her. Everyone that I've talked to said that she's a great teammate. She just wants to win, right?"

She said that she believes Indiana’s "style of play" is something she thrives in and that if the chemistry on the court is there, this team stands a good chance at winning a championship. 

"I'm just excited for [Clark’s] competitiveness. I'm excited for everything she brings to the table. But again, I'm excited for everyone, right? You have Kelsey Mitchell, who's been a vet, too, who has been there for years, who is a heck of a player as well. And so for me, just to kind of be a part of something for the first time – a new team for the first time in six years – I just think it's a fresh wind. It's what I needed. It's re-motivated, it's refocused my energy. And again, like at the end of the day, I just want to win. I want championships, and I think this is the right team for it." 

Cunningham, 28, was selected by Phoenix in the second round of the 2019 WNBA Draft and has become one of the league’s most popular players. She’s appeared in 182 games, averaging 7.7 points per game, 2.7 total rebounds and 1.4 assists. 

Fox News’ Paulina Dedaj contributed to this report.

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