Russian .
Non-communist Russia was called Russia. When Russia was under communism, it was called the Union of Soviet Socialists Republics or the USSR.
In Soviet Russia, money calls you!
euros
Russian
euros
Завтрак (Zavtrak)
A Russian
If you call someone, you are the "caller".
You call someone from Omaha an Omahan or for many, call them Omahans
the Tatars
To ask someone to call you, you can simply say, "Can you please give me a call?"
English is the most widely spoken foreign language in Russia, but it would be debatable to call it the second language of Russia.