The political activities, thoughts and behavior of nations is studied under the field of global political science. It is essentially a social science and branches out into sub-fields such as public policy, political theory, international relations, political economy, etc. Such selected concepts that redefine political science have been presented in this book. From theories to research to practical applications, case studies related to all contemporary topics of relevance to this field have been included herein. It will provide comprehensive knowledge to the readers.