You have Black & White vision.Let's see...
A few months ago Russia told Israel not to enter Syrian air space.
Russia then knocked down 2 Israeli Fighter Jets over Syria.
A week later Israel knocked out an Iranian Base protected by Russia's superior radar.
The next day Russia shut the fuck up.
You think Russia is ready to take on the US?
That wasn't the question.
Russia can't take on US/Israeli designed technology.
When the Jews left Russia, Russia admitted they experienced a "Brain Drain".
You'll notice Israel doesn't have to nuke the Arabs to win a conflict.
And the OP is pretty silly as Russia is quite happy with their side of the globe.
Not only did Stalin banish the Jews but he assassinated the entire hierarchy of his military. He feared, as did Hitler, that they would plot against him and take over the government.