Shell says world doesn't have systems to trace Russian oil refined overseas. It could undermine sanctions
EU warns natural-gas companies not to pay Russia in roubles after it cut supplies to Poland, Bulgaria
Indonesia, world's top cooking-oil exporter, to ban exports this week - it's sent global prices soaring
Elon Musk says his companies including SpaceX, Tesla count as philanthropy as he rebuffs billionaire hate
Putin says West's 'economic blitzkrieg' has failed - central banker warns reserves can't last forever