Michael Oren thinks Israel should deliver:-
...an unequivocal blow to Syrian ground forces deployed near the Lebanese border. By eliminating 500 Syrian tanks--tanks that Syrian President Bashar Al Assad needs to preserve his regime--Israel could signal its refusal to return to the status quo in Lebanon.
Supporting Hezbollah carries a prohibitive price, the action would say. Of course, Syria could respond with missile attacks against Israeli cities, but given the dilapidated state of Syria's army, the chances are greater that Assad will simply internalize the message.
Presented with a choice between saving Hezbollah and staying alive, Syria's dictator will probably choose the latter. And the message of Israel's determination will also be received in Tehran.