Its current travel advice warns that it is illegal in Saudi Arabia to say anything publicly that the authorities "deem disruptive to public order". And it urges visitors to avoid commenting on the royal family, the Saudi authorities, or "issues that could be perceived as political". "Speaking publicly about these issues can be defined by the Saudi authorities as posing a threat to national security," the advice states. It adds: "Statements made on social media many years ago, or those published outside Saudi Arabia, may be taken into account. "The Saudi authorities have the power to end this nightmare today," she adds.