Russian ruble doesn't depend on "investment climate". You should take a basic curse of economics. Oil and Gas are the only Gods in Russia.
You have mentioned "sanctions". Please explain how exactly they can affect ruble? Do you know that today ruble has strengthened (from 47+ to 44.8 for 1 USD). So what happened? Sanctions were lifted? Crimea was returned to the Ukraine? Maybe a negative investment climate turned into a positive one?
