A locomotive travels along snow covered tracks on the Trans-Siberian railroad in the Kemerovo region of Siberia near Yashkino, Russia, on Friday, Oct. 24, 2014. While Russia dodged being cut to junk by Standard & Poor's last week, the bond market is signaling mounting concern a downgrade is coming as economic growth sputters amid tumbling oil prices. Photographer: Andrey Rudakov/Bloomberg via Getty Images