Waltz's Theory Of The International System

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According to Waltz’s theory (neorealism – structural realism), the international system is structured around two principles: anarchy and the distribution of capabilities.
Waltz defines the international system as anarchical as it entails a lack of higher authority above the states. Therefore, the international system is essentially a self-help system made up of states that are independent in which states perform similar tasks and pursue similar goals. The main point is that, under anarchy, each and every state operates on its own without resorting to any higher authority. The lack of a centralized government or institution that regulates states behaviours and that enforces laws an regulations triggers illegal behaviours.
The other defining
As rational actors states tend to identify the means that better facilitate the achievement of the objectives. The fundamental objective for any state is to survive. Surviving encompasses the concept of national security. Therefore, Neorealists defines the concept of national security as a main objective of states. In accordance to Waltz, states are willing to pursue all kind of measures in order to maximize security.
Kenneth N. Waltz in his book Theory of International Politics, compares states in the international system to firms in a domestic economy that are only aimed at surviving. “Internationally, the environment of states' actions, or the structure of their system, is set by the fact that some states prefer survival over other ends obtainable in the short run and act with relative efficiency to achieve that end” (93).
His theory helps only to explain why states behave in similar ways despite their different forms of government and diverse political ideologies, and why, despite of their growing interdependence, the overall picture of international relations is unlikely to
For Morgenthau power was both a means and an end, and rational state behavior was understood as simply the course of action that would accumulate the most power. In contrast, neorealists assume that the fundamental interest of each state is security and would therefore concentrate on the distribution of power. What also sets neorealism apart from classical realism is methodological rigor and scientific self-conception (Guzinni 1998, 127-128). Waltz insists on empirical testability of knowledge and on falsificationism as a methodological ideal, which, as he himself admits, can have only a limited application in international

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