Oil prices edged lower on Monday, with futures on track for the worst monthly performance since mid-2016, after Russia signaled that output will remain high and as concern over the global economy fueled worries about demand for crude.  Brent crude LCOc1 futures fell 28 cents to settle at $77.34 a barrel. U.S. West Texas Intermediate (WTI) crude CLc1 futures fell 55 cents to settle at $67.04 a barrel. Global benchmark Brent was on track to drop about 6.6 percent for the month. U.S. crude was on course to fall about 8.5 percent. Both were set for the steepest monthly decline since July 2016. Even with U.S. sanctions on Iranian exports due to come into force on Nov. 4, oil prices have fallen about $10 […]