Putin does appear to back “Muslims” like Bashar Hafez al-Assad, but is Assad/Syria really a threat to the USA? Sorry, but America seems to be playing on the wrong side. We supported the Muslim Brotherhood in Egypt, the rebels in Libya, and we wanted to support the Islamist rebellion in Syria. Putin, on the other hand, seems to be far more pragmatic, playing the game much like we used to. In other words, he supports regimes that help keep the radical, head choppers in check. We used to do the same, because dictators and strong men who can keep the nut jobs down are in our own (and Russia’s) best interest.
Why are you calling the liberals in the USA “we”?
Until 9/11, Hezbollah killed more Americans than all other terrorist groups combined. They are state-sponsored proxy murderers for Iran.
Helping an Islamist regime with that history to obtain nuclear weapons is not an example of "being on the right side."