First the illegal annexation of Crimea was "complicated," and now the Russian economy isn't in a freefall? Where are you getting your news?
That's not evidence of a Russian-specific crash. All markets across the globe had a correction in January 2016. According to your chart, Russia has apparently bounced back, just like the rest of the world. This is the DJIA: https://finance.yahoo.com/quote/%5EDJI?p=%5EDJI