Britain's King Charles III and Britain's Queen Camilla walk toward an awaiting vehicle flanked by US Protocol Chief Monica Crowley (R) after arriving 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 Kent NISHIMURA / AFP via Getty Images)