King Charles III has called for stronger global cooperation, emphasising support for NATO, Ukraine and climate action during a landmark address to the US Congress amid Donald Trump’s state visit.
Speaking at the centrepiece of his four-day trip marking the 250th anniversary of American independence, Charles highlighted the enduring “special relationship” between the UK and the US, telling lawmakers: “America’s words carry weight and meaning, as they have since independence. The actions of this great nation matter even more.”
The King described the alliance between the two nations as “truly unique” and stressed that global challenges require collective action, warning: “The challenges we face are too great for any one nation to bear alone.”
In remarks seen as a subtle appeal to Washington to reaffirm its traditional alliances, Charles underscored the importance of NATO, noting that US forces and their allies are central to “protecting our citizens and interests” and keeping Europe and North America safe.
He also urged continued support for Ukraine, calling for “unyielding resolve” in backing “Ukraine and her most courageous people” to achieve “a truly just and lasting peace.”

Addressing environmental concerns, Charles warned of the “collapse of critical natural systems,” adding: “We ignore at our peril the fact that these natural systems … provide the foundation for our prosperity and our national security.”
The King also pointed to the scale of economic ties between the two countries, citing $430 billion in annual trade and $1.7 trillion in mutual investment supporting millions of jobs.
Charles further endorsed the AUKUS security pact, describing it as “the most ambitious submarine programme in history,” and said such partnerships are essential to building “greater shared resilience for the future.”
His speech, the first by a British monarch to Congress in 35 years, comes at a time of global instability, which he described as “more volatile and more dangerous,” reinforcing the need for the long-standing alliance to adapt and endure.
Source: The Guardian.