How King Charles delivered a masterclass in diplomacy (and history) via dry wit in the US

King Charles III’s visit to the United States, timed to coincide with the 250th anniversary of American independence has evolved into a carefully choreographed display of diplomacy moulded by the UK monarch's trademark dry wit.

Across a high-profile address to the US Congress and an evening state dinner hosted by US President Donald Trump at the White House on Tuesday, Charles used wit as a strategic instrument — one that softened political edges and recent disagreements over the war in Iran and past criticism by Trump of Britain’s defence posture including that of British Prime Minister Keir Starmer.

Charles arrived in the US on April 27 alongside Queen Camilla for a four-day State visit as the former successfully demonstrated how the monarchy continues to operate as a vehicle of British “soft power.”

How Charles set the tone with his US Congress address

The UK monarch's address to a joint session of the US Congress earlier on April 28 set the tone for the day.

More from Explainers

Storm over the Atlantic: A fraying Nato sets sail into uncertainty

Chokepoints and control: Iran war and the new geopolitics of connectivity

Speaking in the House chamber, Charles drew on centuries of British tradition and Anglo-American history to connect with lawmakers, many of whom responded with applause and laughter.

One of his opening humorous remarks referenced a long-standing parliamentary custom in the United Kingdom.

"Now, as you may know, when I addressed my own parliament at Westminster, we still follow an age-old tradition and take a member of Parliament hostage, holding him or her at Buckingham Palace until I am safely returned. These days we look after our guest rather well, to the point that they often do not want to leave. I don’t know, Mr. Speaker, if there are any volunteers for that role here today."

This is a very real, 400-year-old tradition in the UK. During the State Opening of Parliament, a Member of Parliament (usually the Vice-Chamberlain of the Household) is "taken hostage" and held at Buckingham Palace.

This ensures the safe return of the Monarch from the Palace of Westminster. The tradition began with King Charles I, whose relationship with Parliament was so toxic it led to the English Civil War and his eventual execution in 1649.

He literally feared he wouldn't make it out of the building alive.

The UK King continued to weave history into his remarks through a literary comparison, stating, "Mr. Speaker, this is by no means my first visit to Washington, DC, the capital of this great republic. It is, in fact, my 20th visit to the United States, and my first as King and head of the Commonwealth."

He continued, "This is a city which symbolises a period in our shared history, or what Charles Dickens might have called A Tale of Two Georges: the first president, George Washington, and my five times great-grandfather, King George III. King George, as you know, never set foot in America. And please rest assured, ladies and gentlemen, I am not here as part of some cunning rearguard action."

Here, Charles juxtaposed George Washington — the first president of the United States and leader of the Continental Army — with King George III, the British monarch during the American Revolution and his own ancestor.

History (and the musical Hamilton) often remembers King George III as the "Mad King" who lost America. George III suffered from recurring bouts of mental illness (likely porphyria).

The phrase “rearguard action,” in military terms, is a defensive manoeuvre by a retreating army to protect its rear from the enemy. Charles is joking that he isn't here to "sneakily" take the colonies back.

Another moment of levity by Charles highlighted the relative age of the two nations. "The Founding Fathers were bold and imaginative rebels with a cause. Two-hundred-and-fifty years ago — or, as we say in the United Kingdom, just the other day — they declared independence by balancing contending forces and drawing strength into diversity."

2026 marks the Sestercentennial (250th anniversary) of the signing of the Declaration of Independence in 1776. For Americans, this is a massive milestone.

However, Charles is poking fun at British longevity, for a monarchy that traces its roots back over 1,000 years (to Alfred the Great or William the Conqueror), 250 years is indeed "just the other day."

The British monarch's tone throughout the address was described as engaging and disarming, with his humour helping to ease partisan tensions in a chamber often characterised by division between Republicans and Democrats.

US lawmakers across the political spectrum responded positively, with laughter and standing ovations indicating that the delivery resonated beyond party lines.

From the Seven Years' War to the Boston Tea Party at the White House dinner

If the congressional address established the tone, the evening state dinner at the White House only amplified it. Hosted by Trump, the event provided a setting for more pointed, yet still playful, exchanges between the two leaders.

One of the most widely noted remarks addressed Trump’s previous statements about European defence contributions. "You recently commented, Mr President, that if it were not for the United States, European countries would be speaking German. Dare I say that, if it wasn't for us, you'd be speaking French," quipped Charles during his speech.

The comment referenced Trump’s assertion, made at the World Economic Forum in Davos earlier in January, that without American intervention during World War II, Europe might have been dominated by Nazi Germany.

Charles was referring to the Seven Years' War (1756-1763), known in America as the French and Indian War. At the time, France and Britain were battling for North American hegemony.

If the British had not won the decisive Battle of the Plains of Abraham (1759) and subsequently signed the Treaty of Paris (1763), the American colonies might have remained under French control, likely making French the dominant language of the continent.

Charles also directed humour toward contemporary developments at the White House, specifically renovations, like the newly planned $400 million ballroom overseen by Trump. "I am sorry to say that we British, of course, made our own attempt at real estate redevelopment of the White House in 1814,"

This remark referred to the Burning of Washington during the War of 1812. On August 24, 1814, British forces led by Major General Robert Ross and Rear Admiral George Cockburn occupied Washington, DC.

In retaliation for American troops burning the Canadian capital of York (now Toronto), the British set fire to several government buildings, including the President's Mansion (the White House).

It was the only time since the Revolutionary War that a foreign power has captured and occupied the United States capital.

Another historical reference linked the present-day banquet to a defining pre-revolutionary protest. The dinner, Charles said, was "a very considerable improvement on the Boston Tea Party,"

The Boston Tea Party took place on December 16, 1773. It was a political protest by the "Sons of Liberty" against the Tea Act, which allowed the British East India Company to sell tea in the colonies without paying taxes, undermining local merchants.

Protesters disguised as Mohawk Indians dumped 342 chests of tea into Boston Harbour. This event was a primary catalyst for the American Revolutionary War.

Charles’ remarks throughout the evening reflected an effort to maintain a tone of camaraderie while subtly acknowledging historical tensions and contemporary disagreements.

How Charles sought to reaffirm ties

Charles also drew on more recent history to emphasise the resilience of the UK-US relationship.

Recalling a visit by his mother, Queen Elizabeth II, he said, “When my mother visited in 1957, not the least of her tasks was to help put the special back into our relationship after a crisis in the Middle East,”

He added, “Nearly 70 years on, it is hard to imagine anything like that happening today,”

and continued, “but it is not hard to see how important the relationship remains, in matters both seen and unseen.”

The reference was to the Suez Crisis of 1956 which erupted after Egypt nationalised the Suez Canal. Britain, France, and Israel launched a military intervention without consulting then-US President Dwight D Eisenhower who was furious and feared the move would drive the Arab world toward the Soviet Union during the Cold War.

He pressured the UK by threatening to sell off US reserves of the British pound, forcing a humiliating British withdrawal. The "Special Relationship" was at its lowest point in history.

The Queen’s visit in 1957 was specifically designed to use royal "soft power" to heal that rift.

In addition to speeches, the state visit featured symbolic gestures among which was Charles' presentation of a unique gift to Trump: the bell from HMS Trump, a British submarine launched in 1944.

"May it stand as a testimony to our nations' shared history and shining future. And should you ever need to get hold of us, well, just give us a ring,"

HMS Trump (P333) was a British T-class submarine launched in 1944. Interestingly, it was named after the card-game term "trump" (meaning to outrank or win), as was tradition for that class of vessel.

The submarine served in the Far East during World War II and was not decommissioned until 1969. The gift is a clever piece of historical serendipity, linking the current US president’s name to a literal vessel of the UK-US alliance.

Trump responded in kind with humour directed at domestic politics, quipping, "I want to congratulate Charles on having made a fantastic speech today at Congress. He got the Democrats to stand -- I've never been able to do that."

Charles and Camilla are scheduled to stop by in New York and later in Virginia on Wednesday, before departing for Bermuda on Thursday.

Also Watch:

With inputs from agencies