I have read the comments here and... damn, there are so many idiots...
Let's check some facts.
Russia is in Syria on legal grounds, the USA no. It means that the USA and coalition are intervents who must be fought against.
The USA in Syria supports so-called "moderate rebels" who fight together with ISIS against Syrian army. The USA is bombing Syrian army's positions, Syrian airbase, now they have splashed Syrian plane...
The USA initiated media attack against Russia and Syria when they were fighting in Aleppo to make it free from terrorists.
American friends led by the American authorities organized that war in Syria.
And now tell me who is evil and who must be kept inside own borders? For me is obvious- the USA! Or I'd rather say TSA (terroristic states of America).
Do you really think Putin and Russians in common do not comprehend the power of the US military?
I guess vise versa - remember when Russian first strike by Kalibr missiles was done? They shot from the Caspian Sea. Tomahawks cannot fly that far! Do you remember how suddenly Russian base appeared in Latakia (Syria) and nobody noticed the process. Remember Donald Cook's accident in the Black Sea when Aegys system was switched off by SU-24?
Your authorities lead the world to its nuclear collapse and only Putin's calm and wise reaction keeps the piece for now.