Interdependence refers to the mutual dependency between two or more entities, where each depends on the other to achieve certain goals or sustain itself. Nations are often interdependent through alliances, treaties, and international organizations. The biggest example of this is NATO. Countries in a military alliance like NATO rely on each other for collective security. Economic interdependence also plays a big role in international relations. While one country exports its own products to global markets, it depends on another country for essential raw materials. In short, interdependence emphasizes the nature of global systems in which the actions and well-being of one entity are closely tied to those of the others.

• Keohane, R. O., & Nye, J. S. (2012). Power and interdependence (4th ed.). Pearson.