It seems like other nations are still hell-bent on "regime change" in Syria and want to take up the slack if the US pulls its support for such a policy.
Moscow accuses Israel of endangering civilian aircraft after F-16 jets launch assault on targets in Damascus.
https://www.aljazeera.com/news/2018/12/russia-slams-israel-gross-violation-syria-strikes-181226135745199.html