Tankers running with AIS switched off point to elevated risk-avoidance behaviour among operators, which typically correlates with wider insurance costs and freight premiums. ----Earlier:Months into the Iran war, the world's most critical oil chokepoints are still running at a fraction of their former capacity. The picture at the Strait of Hormuz, a route that carried a fifth of the world's crude oil and natural gas before hostilities began, is starker still. Just one tanker, carrying liquefied petroleum gas loaded in Iran, made the Hormuz crossing on Sunday. The UK Maritime Trade Operations has reported three further tanker attacks in the strait since Saturday, adding to the risk premium facing operators still willing to run the route.