Part of Russia broke away? I didn't know Zherdev was born in Chechnya.
Zherdev is from Ukraine. Russia, Ukraine, Belorus (where Salei is from), Kazakhstan (where Antropov & Nabokov are from), etc. were parts of Soviet Union. They became independent after the Soviet Union fell apart. All these countries have their own language, history and cultural tradition.
To sum it up: Ukaine was NOT a part of Russia. Unless you are taking about a hundred years ago, when it was a part of the Russian Empire.
Also, what is your definition of "Russian"? Somebody who is ethnically Russian or somebody who is a Russian citizen? Because if we are talking heritage, we could be referring to Kovalchuk and Kariya as “Ilya Kovalchuk of Mongolia†and "Paul Kariya of Japan." This is a matter of passport, not blood. Don’t confuse the two.