A quirk in global energy markets has created a stark geographic divide between the haves and the have nots, as a glut of natural gas in West Texas has produced negative prices while shortages loom over Europe and Asia amid the U.S. war on Iran.Over the past week, spot prices at the Waha gas trading hub in the Permian Basin fell as low as -$9.75 per million British thermal units, with expectations that it could hit -$10 when pipeline capacity tightens as operators perform seasonal maintenance later this year, traders...