Business Insider: The Russian ruble just plunged to a 6-month lowBy Business Insider. Published Aug. 17, 2015 at 5:37 pm People wait in line next to a board listing foreign currency rates in comparison with the Russian ruble, outside an exchange office in Moscow on Aug. 3, 2015. Photo by AFPThe ruble fell to a 6-month low against the dollar.Read more here