Yes - fair point. Maybe. Though the EU won't (less significant, perhaps?). Well, we'll see. You may be right, but I wouldn't fancy betting on a Ruble recovery at the moment.
It's hard to say whether the EU is going to lift the sanctions or not, seems like they'll also do that sooner or later.
It does recover now but slower than oil prices grow. Currently staying in long on ruble from 60.90, weak upward bounce from 60.50 support today is a clear hint the slide in USDRUB will continue. My target is 59.50
We can think of the EUR/USD as it has a negative correlation with USD/CHF, but has a positive correlation with GBP/USD.