OPEC+ is preparing to weigh another output increase this Sunday as the world’s most critical oil artery remains effectively shut. Eight core members of the group are expected to discuss raising production again after agreeing to a 206,000 bpd increase for April. Two OPEC+ sources told Reuters that the group is likely to move forward with another hike on paper, positioning itself to add barrels quickly if the Strait of Hormuz reopens. More than 20% of global oil flows normally pass through Hormuz. That flow is now constrained by the U.S.-Israeli…