Putin Sacrifced Assad because of the Ukrainian war, he needed the resources
https://theliberum.com/will-putin-sacrifice-syria-for-ukraine/
While the Russian military remains focused on trying to occupy strategically insignificant villages in the Donbas, Turkey-backed rebels have seized Aleppo, the second-largest city in Syria. They are advancing in other directions as well. Bogged down in Ukraine, Moscow is unlikely to be able to help its client, Syrian President Bashar al-Assad. But why are developments in Syria and Ukraine so interconnected?
By Nikola Mikovic
Russia got involved in the Syrian Civil War only in September 2015, when Assads Syrian Arab Army (SAA) was on the verge of collapse. In February of that year, Russian President Vladimir Putin signed the Minsk Agreements, effectively putting the Donbas war, which had broken out in the spring of 2014, on hold.
One month earlier, pro-Russian rebels were amid a military offensive, and the Ukrainian military was on the verge of collapse. But Putin decided to freeze the conflict and focus on Syria instead.
This posted on the 3rd