King Charles delivered an address to a joint meeting of the U.S. Congress during his state visit, underscoring the long-standing partnership between the United States and the United Kingdom and calling for continued cooperation on shared challenges. In remarks that drew sustained bipartisan applause, he framed the alliance as rooted in shared history, common values and mutual responsibility for global security.
The king urged sustained support for NATO and appealed for assistance in defending Ukraine, stressing that collective resolve is essential to deter aggression and preserve democratic institutions. He highlighted the strategic importance of the transatlantic relationship for deterrence, intelligence-sharing and coordinated responses to emerging threats.
Beyond security, Charles emphasized collaboration on climate change, conservation and public health, areas he has championed for decades. He called for strengthened scientific and technological partnerships and for working together to tackle environmental degradation, promote sustainable energy transitions and build resilience against future pandemics.
Acknowledging the deep cultural and economic ties between the two nations, the king praised the contributions of British and American service members, diplomats and civilians who sustain the partnership. He thanked Congress and the American people for their warm welcome and reiterated a commitment to deepening ties in trade, education and research.
His address stressed unity of purpose rather than partisan division, appealing to shared democratic principles and the moral obligation of free nations to protect vulnerable peoples. Members of both parties responded with standing ovations at several points, reflecting the symbolic weight of the state visit and the enduring nature of the U.S.-U.K. relationship.
The speech capped a series of events on the royal visit, designed to reinforce diplomatic, economic and cultural bonds and to signal continued alignment on international security, climate policy and humanitarian concerns.