Volodymyr Zelenskyy has said he is “exchangeable” for Ukrainian membership of NATO, indicating he would be prepared to step down as president if his country was allowed to join the military alliance.

He also suggested he was ready to sign a minerals deal with the US that was put on hold after his heated meeting with Donald Trump in the Oval Office on Friday.

Mr Zelenskyy was speaking to reporters on Sunday evening after earlier talks with other world leaders at a London summit hosted by Sir Keir Starmer, who suggested a coalition of European allies could step up to defend Ukraine and “guarantee the peace”.

Latest updates on Ukraine’s future

Asked by Sky News’ lead world news presenter Yalda Hakim if he could quit in the event his country becomes a NATO member, he said: “I am exchangeable for NATO.”

The Ukraine president added: “I have said that I am exchanging for NATO membership, then it means I have fulfilled my mission. NATO means I have fulfilled my mission.”

But, he continued: “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. And it will be a bit more difficult.”

Mr Zelenskyy has also rebuffed US officials calling for him to resign.

His comments at Stansted Airport come after Republicans including senator Lindsay Graham and speaker Mike Johnson suggested he should step down from his position following the fiery White House exchange with President Trump.

Mr Zelenskyy spoke to journalists shortly before leaving the UK on Sunday evening.

In response to a question from Yalda Hakim, Mr Zelenskyy said: “I can give [Lindsay Graham] citizenship of Ukraine and he will become a citizen of our country.

“And then his voice will start to gain weight, and I will hear him as a citizen of Ukraine on the topic of who must be the president.”

“The president of Ukraine will have to be chosen not in Lindsay Graham’s home but in Ukraine,” he added.

Mr Zelenskyy confirmed there has been communication between Ukraine and the Trump administration since the clash on Friday, but “not on my level”.

Mr Graham – a Republican senator and close Trump ally – labelled the meeting a “complete, utter disaster” at a press briefing on Friday.

Asked whether Mr Zelenskyy should step aside, he said: “He either needs to resign or send somebody over that we can do business with, or he needs to change.”

After the London summit on Sunday, the prime minister unveiled a four-step plan discussed by leaders, including a pledge to “develop a coalition of the willing” to defend a deal in Ukraine and guarantee a peace settlement.

Sir Keir said Europe “must do the heavy lifting”, and the UK “is prepared to back this with boots on the ground and planes in the air, together with others”.

He also announced a new deal which will allow Ukraine to use £1.6bn of UK export finance to buy 5,000 more air defence missiles.

Zelenskyy’s meeting with the King

The Ukrainian president’s 90-minute sit down with the media came shortly after he wrapped up a tough week with a visit to see the King at Sandringham.

Mr Zelenskyy flew to Norfolk in a helicopter on Sunday afternoon after attending the security summit in central London.

People – some holding Ukraine flags – gathered outside Sandringham to try to witness his arrival. A military helicopter could be seen flying low before descending over the estate.

Pictures released after the meeting show Charles and Mr Zelenskyy shaking hands by the entrance to the royal home. The pair chatted briefly before heading inside, where they posed for more photographs.

Their meeting lasted just under an hour, Sky News understands.

A difficult week for Ukrainian president

Mr Zelenskyy’s difficult few days began on Friday, when his day at the White House with Mr Trump was cut short after their meeting in the Oval Office descended into a shouting match.

The pair had been due to sign a minerals deal and hold a joint press conference – but both events were called off after their tense exchange, fuelled in part by comments from vice president JD Vance.

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As White House officials scrapped the day’s schedule, Mr Trump described the meeting as “very meaningful” in a post on his Truth Social platform.

He wrote: “I have determined that President Zelenskyy is not ready for Peace if America is involved, because he feels our involvement gives him a big advantage in negotiations.”

Meanwhile, in an interview on Fox News, the Ukrainian president said the row was “not good for both sides” and refused to apologise. Mr Zelenskyy then jetted to the UK to meet Sir Keir and other world leaders.

Sir Keir Starmer has suggested a coalition of European allies could step up and defend a potential deal for Ukraine to “guarantee the peace”.

The prime minister indicated some EU nations could be prepared to increase defence spending to protect any peace deal that is agreed between Ukraine and Russia.

But speaking at summit of EU leaders in central London, Sir Keir acknowledged that no such coalition had yet been formed and that “not every nation will feel able to contribute”.

Instead, he said “those willing” – though he did not state which countries this included – would “intensify planning now with real urgency”.

In a sign this could mean troops from member states being sent to Ukraine, he added: “The UK is prepared to back this with boots on the ground and planes in the air, together with others. Europe must do the heavy lifting.”

The UK, France and Ukraine will work on a ceasefire plan to present to the United States, the prime minister has said, in the wake of Volodymyr Zelenskyy’s White House clash with Donald Trump.

Sir Keir Starmer, who visited Washington on Thursday, said he believes Mr Trump does want a “lasting peace” between Russia and Ukraine.

He also said Europe is in a “moment of real fragility” and he would not trust the word of Vladimir Putin.

Follow live – UK hoping Ukraine peace plan can get ‘back on track’ at London summit

Referring to the argument in the White House’s Oval Office on Thursday between Mr Trump, US vice president JD Vance and Ukrainian president Mr Zelenskyy, the PM said it made him feel “uncomfortable”.

“Nobody wants to see that,” he told the BBC’s Sunday with Laura Kuenssberg.

He added: “We have to find a way that we can all work together. Because, in the end, we’ve had three years of bloody conflict. Now, we need to get to that lasting peace.”

The prime minister said he was in his office when the White House shouting match began to be broadcast.

“Clearly, you know, there’s a lot of tension,” he said. “The cameras were on.”

Later in the evening he phoned both Mr Trump and Mr Zelenskyy, saying his “driving purpose” is to “bridge this and get us back to the central focus”.

On Saturday, the PM said he had “quite a long time with President Zelenskyy” before speaking to Donald Trump and French president Emmanuel Macron on the phone.

“We’ve now agreed that the United Kingdom, along with France and possibly one or two others, will work with Ukraine on a plan to stop the fighting, and then we’ll discuss that plan with the United States,” he said.

Of Mr Trump, he said: “I am clear in my mind that he does want a lasting peace.”

Asked why that was, he said: “Because I’ve spoken to him a number of times. I’ve got to know him. I’ve had extensive discussions with him and I believe his motivation is lasting peace.”

He added: “If the central question you’re putting to me is do I trust Donald Trump when he says he wants lasting peace? The answer to that question is yes.”

The PM said he was still pushing for a US “backstop” on Ukrainian security, adding that it was the subject of “intense” discussion.

The “components of a lasting peace”, he said, include a “strong Ukraine to fight on, if necessary, to be in a position of strength”.

And he is pursuing a “European element to security guarantees”.

“That’s why I’ve been forward-leaning on this about what we would do – and a US backstop,” he said.

“That’s the package: all three parts need to be in place, and that’s what I’m working hard to bring together.”

Asked if he would trust Vladimir Putin, Sir Keir said: “Well, no, I wouldn’t trust Putin, which is why I want a security guarantee.

“I wouldn’t trust him not to come again, because he’s proven that he will come again. He’s already done it and we know what his ambitions are.”

Sir Ed Davey, leader of the Liberal Democrats, said his party would support sending British troops to Ukraine as peacekeepers in the event that a “credible” deal is struck.

Conservative leader Kemi Badenoch said European nations need to “make sure that America does not disengage”, adding: “If we all get dragged into an escalation, America will get dragged into it eventually.”

She described Volodymyr Zelenslyy as a “hero” and said her heart “went out to” him during the on-camera argument at the White House.

“I watched it and I couldn’t believe what was happening,” she said. “He was being humiliated.”

Such “difficult conversations” should not happen in front of the cameras, she added.

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The UK is holding an international defence summit on Sunday, hosting the leaders of Italy, France, Germany, Denmark, Norway, Poland, Canada, Finland and Romania.

Italian Prime Minister Giorgia Meloni told Sir Keir Starmer it is “very, very important that we avoid the risk that the West divides” as she arrived for talks at Number 10.

EU Commission president Ursula von der Leyen, NATO secretary general Mark Rutte, and Turkey’s foreign minister Hakan Fidan will also attend the summit.

It is hoped the meeting will help to get things “back on track”, a government source has told Sky News.

However, they admitted there will be “more ups and downs” ahead.

“We must keep our eyes on the prize.”

The insider added that the government was “working yesterday to get [Volodymyr] Zelenskyy back to the table” and finish the minerals deal with the US.

That was thrown into question on Friday during the clash at the White House.

The source said: “We think it’s the right thing to do. Today is about getting European leaders to go beyond the Twitter rhetoric and step up on defence spending – prepare now for a world with no US security guarantee for Europe, not just in Ukraine.”