Britain's King Charles III walks to his limousine upon arrival at Joint Base Andrews, Maryland, on April 27, 2026. King Charles III arrives in Washington Monday for a high-stakes state visit aimed at salvaging Britain's frayed ties with Donald Trump, amid extra-tight security following an attack on a gala dinner attended by the US president. Tensions over the Iran war have rocked the so-called "special relationship" ahead of a trip that was meant to mark the United States' 250th anniversary of independence from the British monarch's ancestors. (Photo by Henry Nicholls / POOL / AFP via Getty Images)