IN A NATIONAL address delivered this morning, President Joe Biden performed what has now become a familiar ritual for U.S. politicians: announcing the death of a terrorist leader. The latest enemy figure whose death has been presented to Americans as a victory was the head of the Islamic State in Iraq and Syria, Abu Ibrahim al-Hashimi al-Quraishi, who was reportedly killed alongside his family during a U.S. special forces raid in northern Syria last night. In brief remarks, Biden characterized the raid as a victory that had made the world more…