Let me draw your attention to this: when the opposition rallies against Putin in Moscow developed, Doku Umarov issued a statement saying that his supporters would not commit terrorist acts on the territory of Russia, as the Russian people had finally woken up and rebelled against the tyrant. The statement seems to be against Putin, but in fact it is absolutely consistent with the interests of Putin and his entourage.
After all, if Doku Umarov comes down on the side of the opposition, in the eyes of the average Russian the opposition is guilty of an alliance with bad people like Umarov. This figure has been spun for so long and so many civilian lives have been sacrificed in order to create the impression that it's not only Navalny and the opposition who are standing up to Putin and denouncing corruption and unfair elections, but also the terrorist Doku Umarov. The emergence of Umarov in Syria will arouse attention around the world, and many Western politicians will feel very uncomfortable.