Ukraine’s Volodymyr Zelenskiy said on Sunday he believed he could salvage his relationship with U.S. President Donald Trump after their explosive meeting in the Oval Office, but that talks needed to continue behind closed doors.

Zelenskiy reiterated that Ukraine would not concede any territory to Russia as part of a peace deal. He said he was still willing to sign a minerals deal with the U.S. and described a discussion on Sunday with European leaders to send a draft peace plan to the U.S. as a key development.

In an extraordinary meeting that was broadcast live on Friday, Trump accused Zelenskiy of being ungrateful for U.S. aid, of showing disrespect to his country and of risking World War Three, casting into doubt Washington’s ongoing support for Ukraine in its three-year-long war with Russia.

Zelenskiy spoke to reporters at a London airport after a summit with European leaders in London on Sunday. While he seemed in good spirits and thanked European countries for their support, the Ukrainian leader was careful to balance his dismay with the events of Friday’s Oval Office meeting with a clear desire to keep talking with Washington.

Zelenskiy said he did not think the U.S. would stop its assistance to Ukraine, because as “leaders of the civilized world” they would not want to help Russian President Vladimir Putin.

But he said he remained prepared for any outcome.

“As regards salvaging the relationship, I think our relationship will continue,” Zelenskiy told reporters via a translator after the London summit.

But he added: “I do not think it’s right when such discussions are totally open. … The format of what happened, I don’t think it brought something positive or additional to us as partners.”

A visibly shaken Zelenskiy arrived in London on Saturday where he was met with a warm embrace from British Prime Minister Keir Starmer and by cheering supporters around Downing Street.

At the summit on Sunday Starmer said European leaders had agreed to draw up a Ukraine peace plan to take to the U.S., in the hope that Washington would offer the security guarantees Kyiv says are vital to deter Russia.

Zelenskiy said Ukraine relied on the U.S. as its top military backer and that stopping the supply of weapons would only help Putin. “The U.S. are … leaders of the civilized world, and they will not help Putin,” he said.

An influential Russian parliamentarian, Konstantin Kosachev, on Sunday derided the hopes for Europe’s stepping up to forge a peace plan. “And if Ukraine should count on something, it can only be on progress (if there is any to come) in Russian-American relations,” he wrote on Telegram.

The abrupt ending to Zelenskiy’s Washington trip meant that the two countries failed to sign a much-vaunted minerals deal that Kyiv hoped would spur Trump to back Ukraine’s war effort, but Zelenskiy said Ukraine was still willing to sign it.

“We agreed upon signing it; and we were ready to sign it. And honestly I believe the United States would be ready as well,” he said.

Trump had sought to cast the minerals deal as a way for Ukraine, which is home to a trove of lithium deposits and rare earth minerals, to repay the U.S. for its billions of dollars in aid.

While Zelenskiy sought to avoid any further antagonism of the U.S., saying he did not want to go over what had happened, he was more forceful on any future ceasefire deal, saying Ukraine would not hand sovereignty of occupied Ukrainian land to Russia.

“Everyone needs to understand that Ukraine will never recognise whatever is occupied by Russia as Russian territories,” he said.

“We hope that these security guarantees will make it 100% impossible to give Russia the opportunity to come with another aggression”.

Zelenskiy said there had been contact between Kyiv and Washington since Friday’s bust-up, although not at his level, and asked if he had considered resigning, he showed no sign of wavering.

“As regards resignation, if I’m to be changed … to change me it will not be easy because it is not enough to simply hold elections. You would need to prevent me from participating in the elections and it will be a bit more difficult.”

Some Republican leaders had suggested that Zelenskiy needed to resign after Friday’s meeting with Trump.

Zelenskiy repeated again, however, that if Ukraine was granted NATO membership, he would have fulfilled his mission.

British Prime Minister Keir Starmer greeted President Volodymyr Zelenskiy with a warm embrace on Saturday after the Ukrainian leader flew to London for talks following his clash at the White House with U.S. President Donald Trump.

In an extraordinary Oval Office meeting on Friday, Trump threatened to withdraw support for Ukraine, three years after Russia invaded its smaller neighbour, Reuters reported.

French President Emmanuel Macron spoke to Zelenskiy and Trump on Saturday and called for calm in an interview following Friday’s White House clash.

In London, a crowd cheered as Zelenskiy arrived for talks with Starmer at his Downing Street office before a summit of European leaders that the Ukrainian president will attend on Sunday to discuss a peace plan for Ukraine.

“I hope you heard some of that cheering in the street. That is the people of the United Kingdom coming out to demonstrate how much they support you … and our absolute determination to stand with you,” Starmer told him.

Starmer told Zelenskiy he had “full backing across the United Kingdom.”

“We stand with you and Ukraine for as long as it may take,” Starmer said.

Zelenskiy said on Saturday he had “important and warm” talks with Starmer, with a discussion on strengthening Ukraine’s position and obtaining reliable security guarantees.

“During our talks we discussed the challenges standing before Ukraine and all of Europe, coordination with our partners, concrete steps to strengthen Ukraine’s position and ending the war in a just fashion, with reliable security guarantees,” Zelenskiy wrote on the Telegram messaging app.

A crash involving two buses in Bolivia left at least 37 people dead and dozens injured in the western Potosi region, police and local authorities said on Saturday.

The accident happened during the early morning hours on the route between the cities of Uyuni and Colchani, when one of the vehicles swerved into the oncoming lane, Reuters reported.

“As a result of this fatal accident we have 39 people injured in four hospitals in the town of Uyuni, and 37 people have lost their lives,” a spokesman for the Departmental Police Command of Potosi told reporters.

Police personnel are working to identify people who were killed and those who were injured and hospitalized, the spokesperson added.

At the scene, a crane turned over one of the buses, which had rolled over onto its side, and police officers were seen removing bodies from the crashed vehicles and carrying them away wrapped in blankets, read the report.

According to the preliminary investigation, one of the buses encroached into the oncoming lane, presumably due to speeding, and caused the collision, the Bolivian Ministry of Government said in a statement.