Denzel Washington fumbles encounter with King Charles III at 'Gladiator II' premiere: 'I didn't know!'Denzel Washington's nervous yet humorous greeting of King Charles III highlighted the unique pressures of royal etiquette at premieres.
Queen Camilla tries to avoid holding hands with Brigitte Macron at D-Day memorialMisunderstanding in gestures can lead to awkward moments, even among world leaders.