CNBC | Trump is relying on OPEC to tame oil prices, but analysts say that's a mistake CNBC President Donald Trump is calling on OPEC to tame oil prices, but analysts say the cartel's sway over markets is limited in the near term. Brent crude prices hit four-year highs this week as the market braces for the impact of U.S. sanctions on Iran ... OPEC: IMO Rules Will Boost Oil Demand By 400000 Bpd America's Oil Growth Engine Is Still Revving Up |