Globalize-rails plugin

[HawX]

I've just downloaded it and installed.

I use:
Locale.set("en-EN") - works!
Locale.set("he-IL") - works!
Locale.set("es-ES") - works!

But I need russian.
Locale.set("ru-RU") - don't work!
Locale.set("ru-Rus") - don't work!
Locale.set("ru") - don't work!
and some other variants.

Does anybody have ideas how to set russian locale to localize dates.