waiting is far too costly. Russia either decides to do it in the near future or never. the window of opportunity to act militarily is not infinite.
we don't need to speculate on the position of the HTS regarding Iran because Julani keeps on declaring Iran to be the enemy in all his speaches since he took control. also the Iranians and their allies on one hand and the HTS on the other hand have been killing each other for the past decade. saying that we have to wait to see whether the HTS is an enemy of Iran or not is like saying that.. Russia has to wait in Ukraine to check whether Zelenksy is an enemy of Russia or not.
and regarding Israel the HTS already declared they have no intention of fighting Israel.
also what do you mean by saying "help the Sunnis against Israel?" you make it sound like the Sunnis are just one united entity. every country and every group has it's own interests. you can crush the HTS and still have great relations with countries like Egypt.
Russia spent a decade fighting the terrorists in Syria. they can still reverse it since the HTS is overstretched and had no time to build fortifications.
also hypotheticaly let us say the HTS actually betrays their CIA handlers and actually fights Israel.. well who gives a fk about fighting Israel? Russia's priority has always been to save their ally that is Syria from having the black flag of terror raised on Damascus. Russia's mission was never to "fight" Israel.
and in any case restoring Russian control of Syria would be much more beneficial to Hezbolah (and thus to Palestine) than having the NATO mercenary army control Syria.
What you think Russia can't wait til after they're done with Ukraine? Syria ain't going anywhere, unless you think HTS will be replaced.
Russia waited a decade to go back to Ukraine and finish the job.
And we do need to speculate on position of HTS, because their stated position on Russia is the same as Israel, which is nothing, and Russia is allied with Iran. No Sunnis aren't one group, but you're going to find very few Muslims, nevermind Sunnis, who don't support Palestine.
If HTS starts fighting Israel or SDF, they'll either be in a much weaker state if and when Russia want to clean it up, or they'll be in a position to need help, in which case Russia gets an ally against the west.
Remember, just like Iran, Russia's enemy is the west, which include Israel, but not HTS. Infact Israel is the west' g-spot, pressure on Israel guarantees the west de-prioritizing elsewhere.
China got Iran to normalize relations with Saudi Arabia who just fought a war with Iran-backed Hothis, the overarching strategy is to unite everyone against the west.