As the King arrives in the United States for a major state visit, events are overshadowed by the court appearance of a man accused of trying to assassinate President Trump. We explain what emerged in court, how it has reshaped the mood in the capital, and why the White House is now publicly calling for political rhetoric to be dialled down. James Matthews and Mark Stone look at how security arrangements around the royal visit have shifted and how diplomacy, politics and protection collide when