Since the 18th century Russia hasn’t had a currency sign, but that will change soon as Russia has announced a new national currency symbol.
If you are not familiar with Cyrillic, then you may wonder why they did come up with a glyph that looks like a P instead of an R?
Although in English Russian Ruble starts with an Latin R, in the Russian language it is Русский рубль.
You can already start designing the new symbol, but as far as we know there is no Unicode code point defined. Maybe the Unicode consortium will place it at code point $20BB. As soon as we know more, we’ll let you know!