China's economic and security interests in Syria are drawing it deeper into the Middle East.
If Saudi Arabia wants to better confront Iran, the kingdom should ease off its distracting feud with its neighbor, Qatar.
Iran's regional strategy is shifting as Syria's civil war winds down and the Islamic State's caliphate collapses.
Returning foreign fighters will return to the criminal networks they knew before going to Iraq and Syria. That's where European authorities should be looking for them.