FILE PHOTO: FILE PHOTO: The logo of Russia’s top oil producer Rosneft is seen at the company’s headquarters, behind the Kremlin wall, in central Moscow, Russia, May 27, 2013. REUTERS/Sergei Karpukhin/File Photo/File Photo
FILE PHOTO: FILE PHOTO: The logo of Russia’s top oil producer Rosneft is seen at the company’s headquarters, behind the Kremlin wall, in central Moscow, Russia, May 27, 2013. REUTERS/Sergei Karpukhin/File Photo/File Photo