Islam is a complete code of life, whose foundations are guidance and blessing for the mankind. Man is the vicegerent and representative of Allah. The role of vicegerent and caliphate can only be fulfilled when the system of Islamic Caliphate is established. It is the duty of Muslims to endeavor for establishing such a system in all parts of the world. This is a compulsory duty. And it is established from Koran and Sunnah and 1.ima of the companions of Holy Prophet (PBU). It is an undeniable historical fact that India was partitioned on the basis of two-nation theory and Pakistan was established on the basis of muslim nationhood and in the name of Islam. The founder and architect of Pakistan also demanded a separeate homeland for Indian muslims, so that they could present before the contemporary world a concrete demonstration of islamic principles of human freedeom, fraternity and equality. In the entire muslim world, pakistan is the most ideal country where a modern Islamic state can be established and true khilafah revived, which can serve as a model for the whole world. The revivalist efforts in the indo-pak subcontinent made during the last 400 years insinuate that Pakistan has a special and pivotal position in the divine scheme for the ascendancy and revival of Islam. I also believe that, through the interplay of the forces of history, Humanity itself is at last moving towards the most balanced system of politico-socio-economic justice as enunciated by Islam. This movement of history in the direction of Islam is slow but inexorable, and will ultimately culminate in the global domination of Islam. The struggle and effort to establish the ascendancy of Islam is obligatory upon each one of us. The global domination of Islam is bound to come. The question for us is whether we achieve success and salvation in the hereafter by participating in this struggle, or whether we remain Idle and indifferent and earn divine wrath! This choice has to be made by everyone of us. Hopefully, this research will serve as food for thought for people working for the establishment of Caliphate in Islamic world.