RUSSIA - FEBRUARY 20: A guard passes an oil storage tank at OAO Rosneft's Priobskoye oil field in western Siberia, Russia, Tuesday, February 20, 2007. OOO Yuganskneftegaz, which is developing the field, was seized from its previous owner, OAO Yukos Oil Co., in 2004. State-run Rosneft bought Yugansk following an auction to pay for part of Yukos's tax bill. (Photo by Lucian Kim/Bloomberg via Getty Images)
