Russian currency is in a free fall. However, Russia has the money and means to stop the free fall. Russian central bank has about $466 billion in reserves, its sovereign fund has another $100 billion.
Russia can simply not afford for the ruble to continue in free fall. Sooner or later ruble will stabilize.
The real reason behind the fall in stock futures is a comment coming from Germany against QE by ECB.
Oil continues to fall.
Interest rates are falling as investors rush into the safety of Treasuries.
Gold and silver are getting a safe haven bid.