Key Takeaways:
Trump says the US fully controls Hormuz. Ship data shows just 14 vessels crossed Tuesday, down from 130-plus pre-war.
Just 14 vessels transited the Strait of Hormuz on Tuesday — a 90 percent collapse from the 130-plus daily average before the US and Israel attacked Iran in February — even as President Donald Trump declared the US "fully controls" the waterway.
"Iran is using the fear factor of real physical risk to maintain a degree of control over the strait. For many global tankers, the risk-reward math simply doesn't work," said Rachel Ziemba, adjunct senior fellow at the Center for a New American Security.
The International Energy Agency said the strait has effectively closed again since the interim US-Iran deal signed June 17 collapsed in July. Daily transits averaged 26 in July and 33 in June, versus 130-plus pre-war, according to ship-tracking data from Kpler. Of 166 recorded crossings in August, about half used Iran-controlled routes and half turned off position beacons; only two known uses of the US Navy-escorted Oman coast route were recorded.
Saudi Aramco CEO Amin Nasser said Iran's control of the strait has cost the world more than 2.6 billion barrels of oil supply since the war began in February. With war risk insurance at 10 percent of vessel value — up from 0.25 percent pre-war — and Brent crude trading near $85 to $88 during peak disruption, the economic damage is transmitting through energy prices, freight costs, and consumer inflation, with US midterm elections now months away.
The insurance market has become the most direct transmission channel for the disruption. Marsh, the insurance broker, reports that war risk premiums for a single Hormuz transit now reach 10 percent of vessel value, meaning a large tanker pays $3 million to $10 million per crossing. Before the conflict, the same coverage cost about 0.25 percent of vessel value. Iran's attacks have been intermittent — the UAE reported one vessel hit Saturday and three more the prior week — but the threat alone has been enough to keep most commercial operators away.
The last comparable closure was the Iran-Iraq Tanker War of the 1980s, when the strait saw sustained attacks on shipping. But that conflict predated LNG as a material component of Gulf exports. Today, the strait carries roughly one-fifth of global oil consumption — 17 to 21 million barrels per day — plus a substantial share of global LNG trade, meaning the 2026 disruption hits energy-importing nations across both oil and gas supply chains simultaneously.
The gap between Washington's messaging and on-the-water reality is widening. Energy Secretary Chris Wright said Tuesday that oil exports through Hormuz have reached a seven-day average of nearly 9 million barrels per day with US military assistance, while total Gulf exports including pipelines average about 15 million bpd — down from roughly 20 million bpd pre-war. But Kpler data shows traffic remains about 80 percent below the post-deal peak reached June 26, when crossings surged to a five-day average of about 60 after the interim agreement.
Iran's top national security official, Mohsen Rezaei, said Tuesday that Hormuz will not open fully until Washington agrees to Tehran's demands. Treasury Secretary Scott Bessent told CNBC a week ago that a deal could come soon, helping drive oil prices down about $20 per barrel from the July 23 peak — but no agreement has materialized. The UBS Global Supply Chain Stress Index, a 23-component diagnostic, remains 1.35 standard deviations above February levels, confirming that operational normalisation lags market sentiment by a considerable margin.
For Trump, the five-month war is becoming a domestic political liability. Energy prices and consumer inflation pressures could weigh on his approval ratings in the months before the midterms. The Houthi attack on the Tanzania-flagged tanker Tihamah that killed four crew members Tuesday — the first fatalities from Houthi shipping attacks since the war began — shows that the security environment across the broader region remains volatile. As long as insurance costs stay at 10 percent of vessel value and Iran maintains its six-point demand framework, the strait's effective closure will persist regardless of what the White House claims.
This article is for informational purposes only and does not constitute investment advice.
