You can still sue any specific person, just not the office they represent. E.g. if the Senate passes a law, all senators are still subject to that law as individuals.
The other side to rule of law is that the government can't punish you arbitrarily - they need to have an applicable law, and they can only apply it to you as written (including penalties etc). In a system without rule of law, a subject can be charged with wrongdoing on the whim of the ruler. That part is also missing in KSA.
The other side to rule of law is that the government can't punish you arbitrarily - they need to have an applicable law, and they can only apply it to you as written (including penalties etc). In a system without rule of law, a subject can be charged with wrongdoing on the whim of the ruler. That part is also missing in KSA.