Oil prices rose Tuesday on global supply concerns following U.S. sanctions on Iran’s oil exports, with benchmark Brent surging to a four-year high, then retraced gains to settle just slightly higher after U.S. President Donald Trump called again on OPEC to boost crude output.  In a speech before the United Nations, Trump reiterated calls on the Organization of the Petroleum Exporting Countries to pump more oil and stop raising prices. Earlier, oil prices had surged on worries about global supply after U.S. sanctions on Iran’s oil exports take effect Nov. 4. Brent LCOc1 hit $82.55 per barrel, its highest since Nov. 10, 2014. “It’s hard to believe that the Saudis won’t answer the call at some point, especially if prices tick much higher,” said John Kilduff, a partner […]