Oil prices extend gains, lifting Brent crude towards $80 on fears of wider Middle East conflict Reuters.comU.S. crude oil jumps more than 3%, closes above $77 as market waits for Israel strike against Iran CNBCOil Futures Extend Rally on Middle East Geopolitical Tensions The Wall Street JournalFears of a Global Oil Shock if the Mideast Crisis Intensifies The New York TimesCould war in the Gulf push oil to $100 a barrel? The Economist