Is a monarchy permissible in Islam?

Answer

Yes, monarchies are permissible. Some Ambiya (alayhimus salaam) were kings as well. Allah Ta'ala had established also the system of monarchy. A monarchy is permissible as long as the king rules according to the Shariah. The determinant is the Shariah. The ruler will be legitimate and valid in terms of the Shariah if he governs in accordance with the Law of Allah Ta'ala.