The study of interconnectedness of economics, politics and laws on a global level is referred to as international relations. It draws from the fields of international law, communication studies, geography, sociology, anthropology, psychology, criminology, demography and history. International relations is a vast area which encompasses various global issues such as nuclear proliferation, ecological sustainability, global finance, globalization, international security, human rights and state sovereignty. As an academic discipline, international relations include various theories. Some of these theories are normative theory, epistemological theory, positivist theories including realism, liberalism, neoliberalism, regime theory, and post-positivist theories such as constructivism, Marxism and feminism. It presents the complex subject of international relations in the most comprehensible and easy to understand language. This book studies, analyzes and upholds the pillars of international relations and its utmost significance in modern times. It aims to serve as a resource guide for students and experts alike and contribute to the growth of the discipline.