IntroductionHistorically, realism has been the dominant theory of international relations that explains the fundamental features of international politics, inevitably associated with conflict and war (Chiaruzzi, 2012, p. 36). ). Basically, there are two approaches to realism; classical realism and neorealism. Classical realists place strong emphasis on historical reality and derive its principles, guidance, and practice from the narrative of history (Chiaruzzi, 2012, pp. 37). In contrast, neorealism relies on a scientific method by examining economic theory and the philosophy of science rather than historical thinking (Chiaruzzi, 2012, pp. 41). Furthermore, power is central to realistic perspectives of international relations because it is crucial for understanding two main questions: who can hope to win a conflict? And, along the same lines, who governs international politics? (Guzzini, 2013, p. 47). According to Morgenthau, power was the consequence of the search for domination, the immediate goal of all political action and the essence of international politics (Guzzini, 2013, p. 47). Realists vigorously argue that conflict is inevitable, even essential, in international politics. politics (Chiaruzzi, 2012, p. 36). Force and ultimately war are an important means of resolving issues when disputes cannot be resolved peacefully (Chiaruzzi, 2012, p. 36). “To the extent that order exists in international relations, it is the precarious product of the balance of power or hegemony (Chiaruzzi, 2012, pp. 36). » Therefore, the idea of ​​a balance of power and interests is rightly recognized as a central theme of realism (Williams, 2004, pp. 649). This essay seeks to examine the different variants of realism and identify the role played by power...... middle of article ......the differences between two main approaches to realism, however, classical realism and neorealism share key concepts and doctrines in which power is central to realist perspectives. References Chiaruzzi, M. 2012. Realism. In: Devetak, R., Burke, A. and George, J. eds. 2012. An Introduction to International Relations. 2nd ed. Melbourne: Cambridge University Press, pp. 35-47.Donnelly, J. 2000. Realism and international relations. Cambridge [England]: Cambridge University Press. Guzzini, S. 2013. Power, realism and constructivism. Hoboken: Taylor and Francis. Morgenthau, HJ 1972. Six principles of political realism. Politics Among Nations, pp. 88-95.Williams, MC 2004. Why ideas matter in international relations: Hans Morgenthau, classical realism, and the moral construction of power politics. International organization, pp.. 633-665.