Ruble seems to recover and tend to stablize.

As you suggested that Russia suffered from droping of oild price and deppreciation of Ruble in a short run, Russia as a giant country with rich resources would not be collapsed in a long run. However, Russia is a threat to its neighbors if its economy becomes worse and will deem for protractided time. Therefore, it concerns me so much that Russia may use extreme measure, like initiating a war striking and occupying the Eastern Ukraine, or ...