The possibility of such collaboration would once have been considered exceptionally impossible.
Assad got to be an utter detestation in the West and a significant part of the area after the severe means he utilized amid six years of bloodletting that slaughtered many thousands, dislodged a large portion of his populace and sent a huge number of exiles to neighboring nations and Europe.
Be that as it may, much has changed. Vladimir Putin's Russia is completely drawn in on Assad's side, with no world players excited to take it on.
The arrangement of revolt gatherings now sticks to a modest bunch of pockets around the nation, lacking energy and liable to come back to a poor quality rebellion, best case scenario.
Most basically, the approaching United States (US) president extends a kind of adaptability lacking under Barack Obama.
Promising to scale up the war on IS, US President-elect Donald Trump has indicated he would be prepared to work with Assad and Russia.
"I don't care for Assad by any means," Trump said amid the second presidential level headed discussion in October.
"In any case, Assad is executing ISIS. Russia is executing ISIS," he said, utilizing an option acronym for the gathering.
What's more, his determination of ExxonMobil CEO Rex Tillerson, who has broad business dealings with Russia and binds to Putin, has just fuelled theory that Trump would seek after nearer ties with Moscow.
In the event that such a move happens, it would resolve an ungainliness that has perplexed the two-year, US-drove military push to remove IS aggressors from the swaths of Iraq and Syria they seized in 2014.
In these zones, the gathering built up an uncommonly heartless "caliphate" with mass killings and oppression, forced their ruthless elucidation of Islam and incited local insurrections and worldwide psychological warfare.
That pulled together a wide coalition of Western and Middle Eastern countries that appears to be close triumph in Iraq, where the Baghdad government has been a basic partner driving the battle on the ground and where a noteworthy fight for the key city of Mosul is currently in progress.
In any case, in Syria, the battle was muddled by Assad's untouchable status.
Without a neighborhood military partner, the US-drove coalition has collaborated with irregulars and depended on air power and some extraordinary powers' operations.
That approach, which has had unobtrusive achievement, may well disintegrate if Assad is broadly regarded to have survived the war.
Aleppo is critical to solidifying that recognition its misfortune is a devastating hit to the dissidents, abandoning them minimal shot of recuperating energy.
Syria's biggest city was at one time the nation's business powerhouse, holding typical and vital significance as an old exchanging post and long-lasting portal to Turkey and the West.
Assad additionally controls the capital, Damascus, the significant urban communities of Homs and Hama, and additionally the vast majority of the Lebanese outskirt and the Mediterranean drift, where his minority Alawite faction holds influence.
Assad has promised to go ahead with the war until all of Syria is retaken, however has communicated certainty that resistance to him is on the decrease.
"Regardless of the possibility that we complete in Aleppo, we will continue with the war against them," he told a nearby daily paper a week ago.
Presently he can free up some of his troops and a large number of unified militiamen to swing to outstanding pockets held by agitators somewhere else in Syria, and in addition the IS aggressors.
These revolt territories incorporate some extends around Damascus and close to the Jordanian fringe, and additionally in northern Idlib territory, a fortress of Syria's Al Qaeda associate.
"The recover of Aleppo will position Assad to claim that he is Syria's authentic sovereign ruler and entryway the worldwide group to give him bolster," said Jennifer Cafarella of the Washington-based Institute for the Study of War.
He appears to will probably accomplish that on the off chance that he is effectively occupied with battling the IS gathering, which has not been a top need regardless of the way that its significant fortress is the moderate sized Syrian city of Raqqa.
On Sunday, IS aggressors re-possessed the focal town of Palmyra, which they had been removed from not long ago an amaze assault that plainly exploited the Russian and Syrian government's distraction with Aleppo.
It's misty whether Assad will organize retaking Palmyra, with what's left of its archeological fortunes after the first IS occupation.
He may like to hold up a couple of months with expectations of building another circumstance with the new group in Washington.
In any case, Syria's future will probably be chaotic for some time, given the variety of equipped groups, the probability of proceeded with outside interfering through permeable fringes and the injury and fury felt by a great part of the populace.
Many expect a proceeded with uprising which thus would help Assad contend that he ought to be seen as an accomplice in the universal battle against "fear mongering."
In the fight for nearby hearts and psyches, it poses a potential threat that Assad depended so intensely not just on Russia and long-lasting partner Iran to retake Aleppo, but on the other hand was helped by Lebanon's capable Hezbollah civilian army and volunteers from Iraq and Afghanistan.
This unmistakable difference a distinct difference to the outside forces supporting the restriction.
Nobody sent in troops other than Turkey, a mediation for the most part set on scaling back Kurdish contenders it regarded a danger to its own particular security.
The Syrian dissidents were outfitted just daintily, and the US ceased from assaulting Assad even after the 2013 utilization of concoction weapons.
Indeed, even the thought of a no-fly zone over northern Syria was rejected.
Cafarella said this environment legitimizes a rising Al Qaeda story that the global group permitted Iran and Russia to command Syria, and as a manikin Assad must be contradicted.
"Al Qaeda's capacity to select will develop as opposed to reduce after Aleppo's fall," she said. "The dread danger radiating from Syria will increment as opposed to diminish."
An unavoidable issue now is the position of Assad's territorial foes, from Saudi Arabia and other inlet countries to Turkey.
Assad may campaign for restarting peace talks, wagering on the resistance's shortcoming to constrain concessions essentially that he ought to stay in power at the leader of a more comprehensive government.
Be that as it may, given the epic destruction he has directed, a honest to goodness rapprochement appears to be impossible in the outrageous.