By Israeli planes. Unfortunately, this probably won’t do much to change Syrian policy.
The Israelis buzzed Assad’s house in August 2003 and bombed an Islamic Jihad training camp in Syria in October 2003. Meanwhile, Americans in Iraq have made hot pursuit incursions into Syria. There has been no response to any this (except through terrorist proxies). Given the Syrians’ apparent impotence in the face of such aggression, you’d think we’d have tremendous diplomatic leverage with Damascus. So why isn’t Assad bending over backwards to please the US and Israel? Probably because he’s incapable of it: Syria isn’t run by an iron-fisted dictator like Assad’s dad anymore, but rather by a patchwork of competing factions within the Baath party, the military, and the various secuirty services. As long as Assad is in place as a figurehead, we won’t know who really runs Syria. And until we know that, it won’t be clear which house(s) really needs rattling.