Brent Crude futures settle at $113.88/bbl, down $1.93, 1.67%.

By Farhan Rafid and Anthony HarrupOil prices fell Tuesday, with U.S. benchmark crude slipping back under $100 a barrel as traders held out hopes for regional diplomatic efforts to ease Middle East tensions.December Brent crude futures settled down 1.7% at $113.88 a barrel, and December West Texas I…