Defensive Realism is a theory in international relations that suggests states prioritize their security and survival over aggressive expansion. It posits that while states seek power, they do so mainly to ensure their own safety rather than to dominate others. This approach emphasizes the importance of maintaining a balance of power to prevent conflicts. According to Defensive Realism, states are rational actors that respond to threats in their environment. They are more likely to engage in defensive strategies, such as forming alliances or enhancing their military capabilities, rather than pursuing offensive actions that could provoke wars. This theory contrasts with Offensive Realism, which argues that states are inherently aggressive.