Dow futures fall 500 points as crude oil prices spike again: Live updates CNBCIran War Live Updates: Oil Climbs Back Above $100 as U.S. Plans Hormuz Blockade The New York TimesStock futures sink, oil prices jump as U.S. prepares to blockade Strait of Hormuz CBS NewsOil prices jump on US plans to blockade Iranian ports in Strait of Hormuz | CNN Business CNN