The Russians have good reason to do what they are doing in Syria. One out of seven people living in Russia is a Muslim, nearly all of them Sunni. Sunni jihadis is an existential threat to Russia and a serious (but not existential) threat to China. Russia and China have every reason to help support the Shia crescent in the northern Middle east as a buffer against Sunni Islamism. Lastly, they are doing what our government can't seem to bother with doing itself, namely taking out Sunni Islamists such as ISIS and Al Queda and its associates. Our Washington DC crowd is absolutely lunacy.

Well, the problem with attacking the Russian homeland directly is that far better armies with far wiser and more skilled generals in charge have tried this in the past. Didn't work out so well for them either.

You're right, though: if America's leadership is batshit insane enough to launch a direct attack on the Russian homeland, America is done. Attacking a nuclear power on their own soil with conventional warfare is a guaranteed way to see New York, Washington D.C., and Boston turned into radioactive cinders.

All I can say is that America's leadership is truly crazy if it thinks that a war with Russia is desirable, winnable, and palatable to America's armed forces.

We hit too deep into Russia and look like we are winning and Russia uses its ICBM's . Game, set match

However I suspect that we'll just skirmish with them in Syria and I don't know how that might go . If we take loses it might escalate or we might punk or Russian hardware might be overrated and we win