international relation

Realists usually have a pessimistic view of human nature. realists are skeptical that there can be progress in international politics that is comparable to that in domestic political life. there is two kind of realist one is classical realist and the other is contemporary realism. classical realism is basically normative approach and focuses on the core political values of national security and state survival. and the three basic classical realist are
Thucydides : political fate, necessity and security, political survival, safety
Machiavelli :political agility, opportunity and security, political survival, civic virtue hobbes: political will ,security dilemma ,political survival ,peace and felicity.
Contemporary realism ist a recent IR doctrine it is basically scientific in approach and focuses on the international system or structure.

They operate with a core assumption that world politics consists of an international anarchy of sovereign states. Realists see international relations as basically conflictual , and they see international conflicts as ultimately resolved by war.
Realist believe that the goal of power, the means of power and the uses of power are a central preoccupation of political activity. International politics is thus portrayed as ‘power politics’. The conduct of foreign policy is an instrumental activity based on the intelligent calculation of ones power and ones interests as against the power and interests of rivals and competitions.
Realists have a high regard for the values of national security, state survival, and international order and stability . they usually believe that there are no international obligations in the moral sense of the word ---ie bond of mutual duty—between independent states.
For classical and neoclassical realists there is one morality for the private sphere and another and very different morality for the public sphere. political ethics allows some actions that would not be tolerated by