In international relations, realism signifies a theoretical perspective focused on power dynamics, national interest, and the inherent anarchic nature of the international system. Realist theorists argue that states primarily act to secure their survival and enhance their power. This perspective often prioritizes military strength and strategic positioning over moral considerations, emphasizing a pragmatic approach to foreign policy. Realism provides a lens through which to analyze international conflicts and alliances, acknowledging that states operate within competitive environments driven by self-interest.