Hans Morgenthau's Principle of Political Realism Hans Morgenthau's Principles of Political Realism 1. The main signpost of political realism is the concept of interest defined in terms of power which infuses rational order into the subject matter of politics, and thus makes the theoretical understanding of politics possible.
Political realism stresses the rational, objective and unemotional.
Realism assumes that interest defined as power is an objective category which is universally valid but not with a meaning that is fixed once and for all. Power is the control of man over man. Political realism is aware of the moral signifigance of political action. Political realsim refuses to identify the moral aspirations of a particular nation with the moral laws that govern the universe. It is the concept fo interest defined in terms of power that saves us from the moral excess and political folly.