The United States will walk away from efforts to broker a Russia-Ukraine peace deal unless there are clear signs of progress soon, U.S. President Donald Trump said on Friday, echoing warnings from his top diplomat.

"Quickly, we want to get it done," Trump told reporters at the White House. "Now if for some reason one of the two parties makes it very difficult, we're just going to say, 'you're foolish, you're fools, you're horrible people, and we're going to just take a pass. But hopefully we won't have to do that."

Trump's comments followed remarks by U.S. Secretary of State Marco Rubio, who said the two sides had just days to show progress or Washington would walk away.

"We're not going to continue with this endeavor for weeks and months on end. So we need to determine very quickly now, and I'm talking about a matter of days, whether or not this is doable in the next few weeks," Rubio said in Paris after meeting European and Ukrainian leaders.

"If it's not possible, if we're so far apart that this is not going to happen, then I think the president is probably at a point where he's going to say, 'well, we're done'."

Trump, when asked, declined to set a specific deadline for how long he was willing to wait.

"Marco's right in saying ... we want to see it end," Trump said. Asked if Russian President Vladimir Putin was stalling, Trump replied: "I hope not."

Trump has been trying to broker a fast Russia-Ukraine peace deal, but the efforts have yielded no breakthrough so far.

On March 18, Trump proposed that both sides refrain from striking energy infrastructure facilities for 30 days. Russia and Ukraine then agreed.

However, Russia said on Friday Ukrainian forces have still been launching strikes on energy infrastructure in 15 Russian areas. Ukraine has said a recent Russian ballistic missile attack on the northeastern Ukrainian city of Sumy killed 35 people.

Growing frustrations as peace deal proves elusive

Over the past few weeks, Trump administration officials have acknowledged privately that the chances of a quick peace deal in Ukraine have grown elusive. Rubio's comments in Paris, three European diplomats said, reflected growing frustration in the White House over what they said are Russian intransigence to end the war.

Kremlin spokesman Dmitry Peskov said on Friday that some progress on a peace settlement had already been made, but that contacts with Washington were difficult. He said Russia was striving to resolve the conflict while ensuring its own interests. Moscow remained open to dialogue with the United States, he added.

Peskov said the negotiation process remains extremely complicated. He said Russia observes no substantive calls for peace from European Union countries regarding Ukraine. Instead, the EU persists in promoting militarization – both for itself and Ukraine – rather than pursuing peaceful resolution, he added.

The talks in Paris on Thursday were the first substantive, high-level and in-person talks on Trump's peace push that have included European powers. Rubio said a U.S. peace framework he presented received an "encouraging reception." Zelenskyy's office called the talks constructive and positive. Rubio said he spoke with Russian Foreign Minister Sergei Lavrov after the Paris talks and briefed him on elements of the U.S. peace framework.

A U.S. official said the sides would re-engage in London next week, giving Ukraine time to agree fully to a "term sheet" presented by Washington. Kyiv was ready for a comprehensive ceasefire over sea, land and air for at least 30 days or longer, the official said.

Trump promised during his election campaign to end the war in Ukraine within his first 24 hours in the White House. He moderated that claim on taking office, suggesting a deal by April or May as obstacles mounted. He has pressured both sides to come to the negotiating table, threatening tougher sanctions on Russia or an end to billions of dollars in U.S. military support for Kyiv.

Both Ukraine and Russia showed up for U.S.-brokered talks in Saudi Arabia, which resulted in a partial ceasefire, but nothing more.

A source familiar with internal deliberations said Trump had made it clear to his team that he was questioning whether it was worthwhile sticking with the talks to break the impasse. The first U.S. official said Rubio's comments were reflecting Trump's frustration with the issue and a concern that this will soon be "Trump's war."

Bloomberg reported on Friday that Washington was prepared to recognize Russian control of Crimea, seized by Moscow in 2014, as part of a broader peace agreement between Moscow and Kyiv. Bloomberg cited sources as saying the U.S. has not yet made a final decision on the matter.

Zelenskyy on Thursday reiterated his government's red line on territorial issues.

"Today, we are discussing an unconditional ceasefire, and until that happens, we are not discussing territory. You know my position and our red lines – we will never recognize any of our temporarily occupied territories as Russian," he told reporters.

Ukraine minerals deal 'may not buy peace'

The latest U.S. warning of walking away from a Russia-Ukraine peace deal comes after Kyiv and Washington signed a memorandum on minerals deal on Thursday.

In a Facebook post, Ukraine's First Deputy Prime Minister and Economy Minister Yulia Svyrydenko said the document was signed by himself in Kyiv and U.S. Treasury Secretary Scott Bessent in Washington.

Svyrydenko said the two countries will finalize the text of the minerals agreement and sign it in the near future, adding that the agreement will be subject to "ratification by parliaments."

Earlier on Thursday, Trump said he expected to sign a minerals deal with Kyiv next week, after an attempt in February fell apart following Zelenskyy's Oval Office clash with Vance and the Republican president.

However, a minerals deal between Ukraine and U.S. may not buy peace after the latest threat from the White House, according to a BBC analysis.

"Despite the U.S. and Ukraine stepping closer to this mineral deal, the Trump administration's threat leaves it looking more like a business venture," it wrote.

(With input from agencies)