Putin does owt more than fire a few missiles at US missiles and he will be kissing his ruski butt goodbye.
Outcome of this will be the allies will destroy a fair bit of Syria's military, if the reds fire at an ally ship or launch platform then its all up in the air, and likely to be a big ***********
Putin stands no chance against NATO and he knows it, unless he plays the big N card and that is a very very big game changer.
First, Russia and China are military allies. Attack on one, the second will join. China declared so earlier this week again.
Second, there is no UN resolution to attack Syria, a sovereign nation. Any attack will be illegal under international law. So if Russia defends Syria and attacks the perpetrators, there is nothing to complain about.
And given the current rhetoric we are at the brink of dismantling UN. Already there are "calls" for "the west" to leave it. If so, I would like to remind you that Axis countries left LN because they didn't liked to be told whats right or wrong. (hence always saying that we became the very evil our grandfathers fought).
Third. Escalating to war with Russia, NATO has absolutely damn **** to hold the Russian army rolling through Europe.
Greece has bigger army than everyone else combined east of France for heaven sake. (and don't expect Turkey to do anything).
Fourth. Wake up. This is 2018. Russia is a capitalist country, and Putin politically is a Christian democrat. Similarly to Angela Merkel. The Russia communists are far less than the far left politicians in Britain.
So my advice to you. Be proactive. Learn Russian or Mandarin fast.