[Jabba the Nutt]

Russia’s population may be growing, but the Russian population is not growing. Muslims in Russia are increasing in number.

[cookcounty]

"Russia’s population may be growing, but the Russian population is not growing. Muslims in Russia are increasing in number."

Yes, but for now, their increase is (temporarily) overshadowed by millions of ethnic Russians migrating from Central Asian countries (former Soviet Republics Kazakhstan, Uzbekistan, etc.) back to to Mother Russia.