ExplorationExxonMobil shows why it’s fighting so hard for prolific Guyana playStabroek, which could upend Chevron-Hess deal, called ‘incredible success story’Liam Mallon, president of ExxonMobil Upstream Company, attends a panel during Abu Dhabi International Progressive Energy Congress (ADIPEC), in Abu Dhabi, United Arab Emirates, 2 October, 2023.Photo: AMR ALFIKY/REUTERSRobert StewartNorth America Energy CorrespondentHouston