The King will call for unity during his annual Commonwealth Day address amid the monarch’s ‘concerns’ over Canada’s trade war with Donald Trump.

Charles’ full address will be revealed on Commonwealth Day, a day when the royal family’s senior members and invited guests gather to celebrate the Commonwealth.

It comes as the King is said to be concerned over Canada’s tariff war with the US, with the issue being ‘particularly on his mind’.

During his time at the King’s private Norfolk estate on Monday, he had a meeting with the outgoing Canadian Prime Minister, Justin Trudeau, who has had numerous disagreements with the US President.

Trump has been mocking Trudeau for months, threatening to annex Canada as the 51st state and referring to the prime minister as ‘Governor Trudeau.’ 

According to a source close to the King, speaking to the Times, “It’s business as usual, but everything carries greater significance. Canada is a key focus for him. Understanding that he needs to be cautious in his role as the UK head of state, the Canadian head of state, and head of the Commonwealth demands a delicate approach, as not everyone’s interests are perfectly aligned.”

The US imposed 25 percent tariffs on all goods imported from Mexico and Canada rocketing the country into a trade war on Tuesday. 

But just days later, Trump reversed his economic slap down saying that goods that are compliant with the North American free trade agreement with not be tariffed until April 2 and are apparently considering a similar carve out for Canada. 

King Charles’ address will be published in full for Commonwealth Day on Monday when the annual service

On Monday the King met the outgoing Canadian prime minister, Justin Trudeau who has repeatedly clashed with the US president

Trump has been mocking Justin Trudeau for months, threatening to annex Canada as the 51st state and referring to the prime minister as ‘Governor Trudeau’.

During the Commonwealth Day service, The King will tell the gathering at Westminster Abbey: ‘In these uncertain times, where it is all too easy to believe that our differences are problems instead of a source of strength and an opportunity for learning, the Commonwealth’s remarkable collection of nations and peoples come together in the spirit of support and, crucially, friendship.’

Charles will also say: ‘The Commonwealth’s ability to bring together people from all over the world has stood the test of time and remains as ever-important today.’

Trudeau is set to officially transition to a new leader once his Liberal Party holds leadership elections on Sunday. That new leader will soon face a national election shortly after.

He is trying to have some semblance of a victory lap after being forced to resign when it appeared he could not win the next election.

At a press conference in Ottawa discussing childhood health care, he clearly saw the end of the line and became emotional.

‘On a personal level, I made sure that every single day in this office, I put Canadians first and I have peoples’ backs and that’s why I’m here to tell you all that we got you, even in the last days of this government, we will not let Canadians down today and well into the future,’ he said as he’d clearly started to cry.

He added that he is to looking forward to ‘a transition to my duly elected successor in the coming days or week.’

Meanwhile, Trump continues to mock Trudeau and had his doubts that the prime minister was stepping down for good.

‘Believe it or not, despite the terrible job he’s done for Canada, I think that Justin Trudeau is using the Tariff problem, which he has largely caused, in order to run again for Prime Minister. So much fun to watch!’

The next Canadian election will be held no later than October 20, 2025.  

This year’s Commonwealth Day theme is Together We Thrive, which celebrates the ‘enduring spirit of the Commonwealth family’. 

The King, who is head of the Commonwealth, gives an annual address each year to the family of 56 nations, but last year pre-recorded a video message, after postponing his public-facing duties for about three months after being diagnosed with cancer.

The Princess of Wales also missed the service last year, a key event in the royal calendar, after also being diagnosed with cancer, but will be among the congregation alongside the King, Queen and Prince of Wales.

Kate is still making a gradual return to public duties after saying she is in remission.

William, Kate, Charles and Camilla will be joined by the Princess Royal and the Duke and Duchess of Gloucester for the service, said Buckingham Palace.

During the service, singer-songwriter Joan Armatrading will perform an arrangement of her well-known hit Love And Affection for the 2,000-strong congregation.

The Princess of Wales also missed the service last year, a key event in the royal calendar takes place at Westminster Abbey

On the same day, the King will launch the inaugural King’s Baton Relay at Buckingham Palace, officially starting the countdown to the Glasgow 2026 Commonwealth Games.

It marks the 18th official Commonwealth Games relay, and Charles’s first as King.

He will place a message inside the baton, which will be sealed and kept closed until the opening ceremony next summer, when his words will be read out to signal the start of the competition.

Charles will hand the baton to the first baton-bearer, six-time Olympic champion cyclist Sir Chris Hoy.

Sir Chris, who has terminal prostate cancer, will walk through the Palace’s Quadrangle to the Centre Arch, along a pathway lined by pipers from the Shree Muktajeevan Swamibapa Pipe Band London.

Charles and Camilla will also be guests of the Commonwealth secretary-general, Baroness Scotland, at the annual Commonwealth Day reception on Monday and hear a commemorative song by Lord Lloyd-Webber to mark the inaugural Commonwealth Peace Prize.