Standing before a joint meeting of the United States Congress on Tuesday, Charles III used a rare appearance by a British monarch to emphasise the enduring alliance between Britain and the United States, warning lawmakers that democratic nations face a “dangerous era” requiring renewed unity.
The address, delivered during the King’s first state visit to the United States since he ascended the throne, blended historical reflection with a call for closer cooperation on global security, climate change and the defence of democratic values.
Lawmakers from both parties repeatedly applauded as Charles highlighted the long and often complicated history linking the two countries. The King noted that the United States was born from rebellion against the British Crown but said the ideals that shaped the American republic were deeply connected to Britain’s own constitutional traditions.
“The founding fathers were bold and imaginative rebels with a cause,” Charles said, referring to the leaders of the American Revolution. The chamber responded with laughter before the King turned to the shared political principles that he said bind the two nations today.
He pointed to the influence of English common law and the constitutional settlement that emerged in Britain after the Glorious Revolution of 1688, arguing that those ideas helped shape the democratic institutions later developed in the United States.
Charles also praised the American system of government for ensuring that executive authority remains subject to institutional oversight. His remark that executive power must be restrained by “checks and balances” drew one of the loudest rounds of applause of the speech.
The address marked only the second time a British monarch has spoken before Congress. The last such appearance came in 1991, when the King’s mother, Elizabeth II, addressed lawmakers during a visit to Washington following the end of the Gulf War.
Charles’s speech came at a moment of heightened geopolitical tension and political strain within Western alliances. In his remarks, the King urged democratic countries to remain united in confronting global instability and threats from authoritarian powers.
“Our two nations have again and again found ways to stand together when it mattered most,” he said.
The King pointed to the long history of military cooperation between Britain and the United States, including the two world wars, the Cold War and the international response to the terrorist attacks of September 11, 2001.
In recalling the aftermath of those attacks, Charles noted that the NATO alliance invoked its collective defence clause for the first time in its history, bringing European and North American allies together in a joint response to terrorism. ([The National][1])
He said the alliance remained essential to maintaining stability in an increasingly uncertain world and praised the role of the United States within NATO’s security framework.
The King also referred to the war in Ukraine, urging continued resolve in supporting nations facing aggression. His remarks on the conflict drew applause from many lawmakers, though some members remained seated. ([The Independent][2])
Charles devoted part of his speech to climate change, an issue he has championed for decades. He warned that environmental degradation and the rapid melting of polar ice caps posed serious risks to global stability and economic prosperity.
The response to those remarks was more subdued than the applause that greeted his comments on defence and democratic values, reflecting the sharper political divisions in Washington over climate policy.
The congressional address was the centrepiece of a four-day state visit that included meetings with President Donald Trump at the White House, a state dinner and several ceremonial engagements in Washington.
Charles and Queen Camilla also travelled to New York, where the King paid tribute at the National September 11 Memorial & Museum and met with first responders.
The visit coincides with preparations for the 250th anniversary of American independence in 2026, a milestone that highlights the transformation of relations between Britain and its former colonies.
Once adversaries in the Revolutionary War, the United States and the United Kingdom now maintain one of the world’s closest military and intelligence partnerships.
British officials have described the visit as an opportunity to reaffirm that partnership at a time when global security challenges are multiplying and political divisions within Western alliances have grown more visible.
Charles, who has long represented Britain on diplomatic missions abroad, avoided direct references to contemporary political disputes between Washington and London. Instead, he focused on the deeper historical ties linking the two countries.
“Our destinies,” he said, “have long been intertwined.”
The chamber rose for a final standing ovation as the King concluded his remarks, closing a speech that sought to place the centuries-long relationship between Britain and the United States within a broader narrative of shared democratic values and common purpose.
For a moment inside the Capitol, a British monarch addressing the legislature of a republic founded in revolt against his ancestors appeared less a paradox than a reflection of how far that relationship has evolved.
