Abstract
Theories in international relations are built in order to understand the international anarchy, according to Grieco. Scholars are interested in analyzing struggles between states, as well military as economic one. So this topic is actually the study of states' behavior in the world, and relationships between them. Three theories are dominating the international relations' study. In both of them, the state is seen as a rational actor, which is trying to get benefits from its actions. But these theories do not agree on the question of the importance of internal and domestic politics.
For the state-society approach, internal politics are sufficient to understand the international relations, whereas institutionalists are more focused on the international institutions, or realists on the balance of powers. In this essay, we will wonder about the role of the domestic politics in the way of thinking international relations. We will firstly explain why some consider that they are sufficient, and we will show after that there are other variables which cannot be forgotten.
