US-Israel-Iran tensions risk chokepoints, costs

Oil and shipping are the real story here. The headline tension is military and diplomatic — the U.S., Israel, and Iran — but the economic risk shows up at sea, in two narrow passages that global trade cannot easily replace. One is the Strait of Hormuz, where Gulf oil and LNG leave the region. The other is Bab el-Mandeb, the southern gate to the Red Sea. This week, the immediate news is that Hormuz is still effectively constrained even after Washington said a ceasefire with Iran remains in place, and shipping companies still do not trust the route enough to go back to normal. (bloomberg.com) ### Why is Hormuz the bigger chokepoint? Hormuz is the narrow exit for Persian Gulf energy exports. The IMF’s PortWatch monitor says disruptions there have been ongoing since February 28 and that the strait handles about 25% of global oil moved by sea. That is why even a partial freeze matters so much — you do not need a total closure to create a global pricing problem. Fewer sailings, longer waits, and more security checks are enough. (portwatch.imf.org) ### What changed this week? The gap between diplomacy and shipping reality got clearer. On May 5, U.S. officials said the ceasefire with Iran was still in place even after clashes involving ships in Hormuz and missile strikes on the UAE. But on May 6, Lloyd’s List still described the strait as effectively closed in commercial terms, with shipowners and insurers unconvinced that U.S. protection plans were credible enough to restore (portwatch.imf.org)uary, but the market is acting like the risk never really went away. (bloomberg.com) ### What is Iran doing in the waterway? Iran is not just threatening disruption anymore — it is trying to formalize control. Lloyd’s List says Tehran has created a Persian Gulf Strait Authority to approve transits and collect tolls, building on an earlier pattern where vetted vessels could move through an Iran-linked corridor after disclosure and, in at least one (bloomberg.com)cause they make timing, insurance, and legal exposure much harder to price. (lloydslist.com) ### Why does Bab el-Mandeb stay in the picture? Because rerouting around one chokepoint often pushes stress into the next network. The IMF flags spillover into the Red Sea and Suez system, and Lloyd’s List says Bab el-Mandeb tanker traffic is still down 45% from 2023 levels even as some crude movements have shifted to secure Saudi barrels. Think of it like squeezing one end of a hose — the pressure does not disappear, it moves. (portwatch.imf.org) ### Where do the costs show up first? First in freight and insurance. Then in fuel. Then in industries that depend on steady energy and shipping schedules. Bloomberg notes the Hormuz disruption has already spilled into fertilizer, manufacturing, and aviation. Lloyd’s List says some vessels trapped in the Gulf have even skimped on war-risk cover because premiums are so high. So the bill is not just “oil gets pricier.” It is also slo(portwatch.imf.org). (bloomberg.com) ### Are markets reacting to headlines or to actual flows? Mostly to actual flows. Lloyd’s List says VLCC volumes through Hormuz are down 36%, and that matters more than optimistic talk about deals. Shipping markets care about whether ships are moving, how long voyages now take, and whether insurers will back them. That is why freight can stay elevated even when politicians sound less alarmed for a day or two. (lloydslist.com) ### So what matters next? Two things. Whether a real U.S.-Iran arrangement reopens Hormuz on terms commercial carriers trust, and whether Red Sea insecurity keeps blocking the obvious fallback routes. If either chokepoint stays unreliable, companies keep paying to reroute, delay, hedge, and insure more aggressively. That is the bottom line — the economic damage comes less from a dramatic full shutdown than from a long stretch of expensive uncertainty. (lloydslist.com)