Cara menginstal aplikasi. The study and practice of international relations is interdisciplinary in nature, blending the fields of economics, history, and political science to examine topics such as human rights, global poverty, the environment, economics, globalization, security, global ethics, and the political environment. In international relations, reciprocity forms the basis of most of the norms (habits; expectations) and institutions in the international system. Many central arrangements in IR, such as the World Trade Organization agreements, explicitly recognize reciprocity as the linchpin of cooperation.