King Charles used a rare address before the United States Congress to emphasize the strength of the U.S.-UK alliance, presenting the relationship between the two countries as a lasting partnership rooted in shared democratic values, even as Washington and London face differences over the war with Iran.
Speaking before a joint session of the Senate and the House of Representatives, the British monarch said the two nations remained bound by common principles despite disagreements on foreign policy and security issues.
“Whatever our differences, whatever disagreements we may have, we are united in our commitment to uphold democracy, to protect our people from harm, and to honor the courage of those who risk their lives every day in service to our countries,” Charles told lawmakers after receiving a long ovation as he entered the chamber with Queen Camilla.
Buckingham Palace had previously described the speech as non-political, but the king’s remarks touched on several sensitive international issues. He underlined the importance of NATO, warned against isolationism, and stressed the need for continued support for Ukraine in its defense against Russia. He also spoke about environmental protection, a cause closely associated with him for decades.
His comments came at a time when President Donald Trump has repeatedly criticized NATO and European allies, including over their position on military support in the conflict involving the United States, Israel and Iran. Trump has also sent mixed signals on the future of U.S. financial and military assistance to Ukraine.
Referring to the September 11 attacks and more than a century of military cooperation, Charles said the two countries had repeatedly stood together through major global crises, including the two world wars, the Cold War and Afghanistan. He said that same determination was now needed in support of Ukraine.
“Mr. President, that same unshakable resolve is required in defense of Ukraine and its brave people,” he said.
Later, during a state banquet at the White House, Trump suggested that King Charles shared his view that Iran must not be allowed to obtain nuclear weapons. The king did not respond directly to that claim and did not mention Iran in his own remarks following Trump’s comments. As monarch, Charles does not speak on behalf of the British government.
Neither Downing Street nor Buckingham Palace immediately commented on Trump’s statement regarding Iran.
In another part of his congressional address, Charles appeared to make a broader appeal against inward-looking politics, saying he hoped both countries would continue to defend shared values alongside partners in Europe, the Commonwealth and around the world.
The speech made Charles only the second British monarch to address the U.S. Congress. His mother, Queen Elizabeth II, spoke before both chambers in 1991.
After the address, the king also met with American technology leaders, where discussions focused on the challenges facing early-stage startups and Britain’s efforts to position itself as an attractive destination for technology companies.
