King Charles and Queen Camilla arrived in the U.S on Monday for their 4-day state visit. The tension between the U.S and the U.K has been evident in recent months, and Queen Camilla decided to send a clear message to President Donald Trump. She displayed it with a ‘careefully planned’ piece of clothing.

Donald Trump has always been a huge fan of the British Royal Family. In September last year, he and First Lady Melania Trump visited the U.K., and during a speech, the president praised the relationship between the two countries.

“The word ‘special’ does not begin to do it justice,” Donald Trump said of the relationship between the United States and Britain. “We’re like two notes in one chord, or two verses of the same poem – each beautiful on its own, but really meant to be played together.”

However, since then, everything has changed. The U.S President’s tone has become more hostile towards the U.K, not least because of the Iran war. Trump called Prime Minister Kier Starmer a “loser” as he didn’t want to assist the U.S. military in the war in Iran, adding that Starmer was “no Churchill.”

Moreover, Donald Trump even compared Starmer to Neville Chamberlain, a leader who had praised Hitler. Trump said Britain was no longer “the Rolls-Royce of allies,” taunting the Royal Navy aircraft carriers as toys.” Earlier this month, when asked about the relationship between the countries, Trump responded, “Not good, not good at all.”

Regaining the good relationship between the United States and Britain has always been a matter of diplomacy. Therefore, the fact that King Charles and Queen Camilla have embarked on a 4-day state visit to the U.S is of great importance back home.

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The hope is that the king and queen will help mend the relationship between the two countries, and perhaps King Charles will do just that on Tuesday. Per the BBC, the monarch is set to address Congress, saying, “Time and again, our two countries have always found ways to come together” as he will call for “reconciliation and renewal” between the U.S and the UK.

While the Royal Family never speaks about politics, Queen Camilla decided to make a statement about her view of the country’s relationship with the United States: a brooch.

Grant Harrold, who worked for the Royal Family between 20024 and 2011, stated that the brooch, which was gifted to Queen Elizabeth II by a New York mayor, shows two flags, the U.K.’s Union Jack and the U.S. Star Spangled Banner, joined together. Per Unilad, Harrold stated that the king and queen’s agenda is unity – and that Queen Camilla’s choice of wearing the brooch sends a strong message to Trump.

“And the decision not just to wear it on the first day of the trip, but from the moment they step on to US soil is key,” the former royal aide said. “It shows from the off, they are there for diplomacy. Donald and Melania Trump will notice it, and they will appreciate it. I have no doubt it will be a discussion point at their private meeting.”

He added, “Wearing a brooch from the vaults is also a clever way to remind Trump about the past, as well as the future. It was a gift to the late Queen from a former New York mayor back in 1957, so will possibly cause the President to think back on decades of close ties between the two countries.”