Islam is about the unity of humanity and the sovereignty of the Creator. This book examines the various aspects of that unity and sovereignty. The idea of the Khilafah is analyzed from all the available texts. The duties and requirements of the rulers and the ruled are laid out in a simple way. The book is a literary look at the structure of government. Application will be determined by the realities of the time and place. It is a complex idea that needs further understanding to fully grasp its necessity.