Polling suggests a majority of Americans oppose the strikes against Iran, even before the full consequences of the conflict are known. That reaction points to a broader shift in public attitudes toward foreign intervention. After decades of conflict in the Middle East, many voters appear far less willing to support military action unless the threat to U.S. security is clearly defined. Public opinion now plays a larger role in shaping foreign policy decisions than it once did. As tensions with Iran continue to develop, the bigger question may not only be what happens overseas, but also whether leaders can maintain public support at home.