According to prevailing Israeli assessments, there is no expectation that the Assad regime will fall in the foreseeable future. In addition, Israeli experts believe that Syrian President Bashar al-Assad has completed the task of securing the survival of the Syrian heartland, that is, having a government-controlled corridor based in the capital of Damascus that climbs north to Alawistan (the Alawi enclave in Latakia) to the port city of Latakia, with the cities of Aleppo and Homs also in his hands. Now he is attempting to spread his reach to Deir ez-Zor.
Over the last year, there has been a clear evolution in the map of shattered Syria. The Syrian heartland under Assad's control has been growing and expanding at a steady pace, while those areas under rebel control have been shrinking consistently. Even those territories under Islamic State control have been gnawed away quickly. Israeli experts estimate that the war in Syria will continue into the foreseeable future, but that the balance of power at this point clearly favors Assad.