For the first time in Syria’s nine-year war, the Turkish military this week launched direct attacks on the Syrian army. President Recep Tayyip Erdogan said Monday that he ordered howitzers and F-16 fighter jets to hit President Bashar al-Assad’s forces near the Turkish border in response to the killing of …

Every expert on transnational jihadism knew that eradicating the Islamic State’s self-declared “caliphate” in Syria and Iraq would not lead to the end of this brutal, malignant movement. Since it had become as much an ideology and a brand as an actual organization, holding physical territory and establishing a proto-state …

During his presidential bid, Donald Trump hammered on about the threat posed to America by the self-styled Islamic State, and how he would defeat it. As an issue, it was perfect for him, since the Islamic State’s sociopathic brutality fueled fear and anger among his core supporters—emotions that candidate Trump …