Islam has a belief that I think we share. Namely, “Theocracy is the most normal form of government.” I think every Christian and probably Jew has common cause with Islam in this basic belief. Paradise is our natural state. Christians understand that this natural state has been restored through the incarnation, sacrifice, death, and resurrection of Christ Jesus. Jews look forward to the coming Messianic Age. Muslims believe that Shariah will bring a very close approximation of this natural state and so believe in the rule by God and not by the people.
Most Christians believe in the reality of the Kingdom of God on earth which is a theocracy and Catholics believe that this theocracy exists within the Church.
There are some differences however. Muslims have an optimistic and we believe unrealistic, belief that Theocracy can be mandated upon all peoples whether or not they are willing to submit. This has led to making what Muhammad called the minor Jihad into the major Jihad of forced conversions that we’ve seen for almost the entirity of Islam’s existence. This is based upon an overly optimistic belief that Muslims can rightly interpret Islam. We on the other hand, recognize the existence of the fall of mankind and the subsequent effects through original sin.
Until their is a proper understanding of humanity’s fallen state we will be forever on the defensive against an overly aggressive religion called Islam.