Just wait until the sanctions hit..
That's going to take years however it's absolutely going to kill the entire economy of Russia. Personally I think that the world should refuse to remove sanctions until Russia completely disarms all of its nuclear weapons and pledges to only use nuclear power for peace.
The entire world is getting tired of the constant threats of nuclear annihilation.
But honestly enough the Russian ruble is never been worth a lot anyway so the failure of this fiat currency isn't really going to affect the rest of the world much anyway...
It might make baah cry a lot though.