I don't know what Russia will do. They've been supporting some of the worst Islamic regimes for a long time. Then again, if their calculations change, they could turn on a dime and start slaughtering muzzies wholesale. I guess it depends on the balance between risk and usefullness for them.
Dittos TE. Their among the most ruthless IMHO. They had no qualms about taking out hundreds of thousands of Afghans when they invaded them back in 1979.