By Mario Abou Zeid, Al Jazeera
The long-planned spring battle of Qalamoun - between Hezbollah and Syrian President Bashar al-Assad's forces on one hand, and Syrian rebels on the other hand - started last weekend. Though the Assad regime and Hezbollah are striving for a victory to regain momentum, it will be a lengthy and costly one that will further degrade their capabilities. Furthermore, it has exposed the reality of the Islamic State of Iraq and the Levant (ISIL) in Qalamoun; that it is operated by the Syrian regime's intelligence.