The polemic about the form of state and system of government emerged after the death of Rasulullah Muhammad SAW, because of the two roles by the Prophet Muhammad as both the bearer of both the treatise and the head of state in Medina. On the other hand there is no concrete message from him who will replace it after him. Term Khilafah, Imarah and Imamah become a study that is always uptodate in the realm of Islam politics. The word "khalifah" and "imam" have the same understanding, namely the highest leader in the Islamic State. If the "caliph" and "imam" are equally understanding, the system of government he leads, namely "Khilafah" and "Imamah", is equally meaningful; no different. The Emir of Amir also means the leader in the general scop...