US President Donald Trump has been criticised for breaking royal protocol during King Charles and Queen Camilla's four-day US state visit to Washington D.C. in 2026. This follows a series of instances where he cut in front of the Queen during a guard of honour inspection during his visit to the UK. These incidents were highlighted by the President's overly-friendly greetings and inappropriate political statements. This breach of royal etiquette was particularly noted as it is a crucial royal rule that the King must remain politically neutral at all times and never engage in public debate regarding the ongoing Iran war. The incident occurred during a state dinner at the White House where Trump announced that King Charles had privately agreed with him regarding the Iran war and its nuclear weapon ambitions.