When a family that also happens to be an institution must absorb the return of those who once departed it, the question of belonging reasserts itself with quiet force. King Charles has issued a formal letter — distributed to government departments, military officials, and the Crown's local representatives — clarifying that the Duke and Duchess of Sussex, now resettled in Britain with their children, remain private citizens outside the working structure of the Royal Family. The letter invokes the Sandringham Agreement of 2020, a compact designed to prevent the ambiguity of partial membership, a