CNBC | US crude tumbles 2.7%, settling at $74.33, as traders cash in on recent rally CNBC Oil prices tumbled as much as 3 percent on Thursday, pulling back sharply after rallying to four-year highs on concerns about the fallout of U.S. sanctions on Iran, OPEC's third biggest crude producer. International benchmark Brent crude futures fell ... Oil spikes to its highest level in almost 4 years as Iran sanctions loom Saudi spare oil capacity ready to be used when demand materializes: Falih Traders bet on oil at $100 as Iran sanctions loom |