All reigning royal families have protection from security services. Can we start a list of who or what agency is responsible for protecting the various monarchs? I know in the United Kingdom the royals are protected by a special section of the Metropolitan Police. I assume that the other monarchs (Spain, Netherlands, Belgium, Luxemburg, Liechtenstein, etc.) are protected by the police agencies of their countries? How is the decision made concerning which royals get security? At some point the relationship of some relatives becomes too remote, right?