Preventive war is a military strategy aimed at addressing potential threats before they materialize. The idea is to strike first against an adversary that is perceived to be developing capabilities that could pose a danger in the future. This approach is often justified by the belief that waiting for an actual attack could lead to greater risks and losses. Critics of preventive war argue that it can lead to unnecessary conflicts and escalate tensions. They emphasize the importance of diplomacy and negotiation as alternatives to military action. Historical examples, such as the Iraq War in 2003, illustrate the complexities and consequences of this strategy.