Explains Strait of Hormuz handles 20M barrels/day (25% of global seaborne oil trade, 20% of consumption). Alternative pipelines limited (Saudi 5M bpd, UAE 1.8M bpd). Protracted closure would have material market repercussions but is highly unlikely due to economic interdependence.
Half of exports from Saudi/UAE, other half from Iraq/Kuwait/Iran. Half of volumes go to China/India. Closure would negatively impact both exporters and importers.