A senior palace aide has revealed that the King “grasped in both hands” the “risk and challenge” of his recent state visit to the United States, but will not dwell on its perceived success.
The trip, which included a “high-stakes” address to Congress, represented Charles’s most significant diplomatic test to date, yet also served as a crucial opportunity to advance palace objectives at the request of the Government.
Much attention has been paid to the personal rapport between the King and Donald Trump, with the aide involved in the visit confirming the two men “get on very well.”
The aide added that “the warmth that you see in public is absolutely the warmth you see in private.”
When questioned if Trump having a warmer relationship with the King than the Prime Minister was awkward, the aide clarified: “It’s not a competition between the King and the Government.
The King is there to support the Government, to help the Government. It was at the Government’s request, of course, that he undertook this visit.”

The King’s address to Congress was widely interpreted as a subtle challenge to some of Mr Trump’s known positions, particularly on Ukraine, Nato, adherence to international rules, and climate change.
However, the aide stressed that the King was guided by “truth” and his “conscience” in delivering a speech that resonated with both Republicans and Democrats, stating its contents were “a measure of how much he personally cares.”
Ahead of the visit, Downing Street’s request for the King to travel was seen as a “throw of the dice,” aimed at mending the UK-US special relationship following Mr Trump’s repeated criticisms of Prime Minister Sir Keir Starmer regarding the war in Iran.
Liberal Democrat leader Sir Ed Davey had previously voiced concerns about Charles potentially being embarrassed by Mr Trump, advocating for the trip’s cancellation.
Reflecting on the journey, a senior palace aide remarked: “What looked like risk and challenge was also a phenomenal opportunity. One that was grasped in both hands by the King and we shall leave you to conclude what the outcome of that was.”
The aide further explained the King’s forward-looking nature: “He’s not a man to dwell long on what some may consider yesterday’s successes, he is always looking towards tomorrow’s opportunities, so generally we’ve tried to encourage him to feel positive – and he has – about the way that the American leg in particular has gone in particular, but his mind is already on what he can achieve next rather than what he achieved this week.”

The monarchy’s “soft power diplomacy” is considered its most potent tool in supporting the UK’s international interests. During the four-day visit, Mr Trump appeared to be won over, repeatedly praising “fantastic” Charles.
A significant gesture came from Mr Trump, who lifted tariffs on Scottish whisky following an intervention by the Queen and King.
Discussing the bond between the two leaders and their spouses, the aide noted: “They get on very well. And it’s not just the King and the president. It’s all four of them with each other.”
Despite potential complexities in the bilateral relationship, the aide described it as an “unlikely” but successful pairing, reiterating: “the warmth that you see in public is absolutely the warmth you see in private.” The meeting in the Oval Office was characterised by “laughter” alongside serious discussions.
During his speech in Congress’ Hall of the House, Republicans and Democrats rose to applaud 12 times as the King underscored the importance of Nato, support for Ukraine, the value of European partners, and the need to reduce global conflicts – all key priorities for Sir Keir’s Government.
The New York Times observed: “Beneath King Charles’s jokes and decorum, some subtle rebuttals to Trump, King Charles III gently pushed back against President Trump’s attacks on Britain and Nato, and he spoke of the importance of checks and balances.”
The aide acknowledged the “high-stakes address to Congress,” adding: “First, what the King says will always be guided by the truth. Two, it will be guided by conscience. And three, they’re all observable facts. Everything that is in that speech is an observable fact. And so, I think we felt very comfortable with the King speaking as he did.”
The positive reception to the US speech and the strong rapport between the president and the King are believed to have placed the special relationship on a firmer footing, particularly significant during the 250th anniversary year of American independence.
The aide reiterated the King’s supportive role: “The King is there to support the Government, to help the Government. It was at the Government’s request, of course, that he undertook this visit.” They added that “The King and the Queen have been able to help the Government in any way and to get the relationship perhaps more widely understood by a wider number of people without some of the noise of current affairs.”
Following his US engagements, Charles embarked on a solo trip to Bermuda, concluding on Saturday, to celebrate the island’s culture and achievements.
The aide commented: “The King has greatly enjoyed it. It has been very busy and the crowds have been so huge they have made us extremely late, but no-one minds about that when you feel that you’re doing some good here, showing that this island matters to Britain, because it certainly matters to the King.”
Despite continuing treatment for an undisclosed form of cancer, Charles remains steadfast in his duties. “This is a man who is absolutely driven by duty. Driven by service,” the aide affirmed.



