Only a fool will not be afraid to fight with Russia. It is necessary to establish relations in a peaceful way, because this is beneficial for both sides.
Only cowards are afraid to fight with their enemies. If your country is attacked you will agree? Besides, we are talking about Syria. What's the Russian? View how did Erdogan. And he didn't think about the fact that it is Russian plane. No one needs to invade the territory of his country.
And how exactly is United States being attacked in SYRIAN air space by Russia, eh? Or vice versa for that matter. United States leads coalition, that is aligned with Iraqi and kurdish parties, Russia was invited officially by legitimate syrian government. Formally, there is no dispute.
But, I guess, it was matter of time before some idiot visits this thread and puts his Call of Duty bias in the world of geopolitics...