The Islamabad MOU was signed on June 17. The blockade was lifted on June 18. Brent fell to $80.59 today. The market read the sequence as: deal → open → oil flows → price drops.
Twenty ships sailed through overnight. Via Oman’s coast. Not the main channel. The central channel — the one that carried 94 ships a day before the war — is still mined.
And this morning, while the market celebrated, Iran’s Persian Gulf Strait Authority published a document requiring all transiting vessels to carry PGSA-approved insurance. Free for now. Fees later. The precedent is being laid during the ceasefire, not after it.
Three Clocks
There are three timekeeping systems running simultaneously at Hormuz. They are measuring different things. They will converge eventually. But not on the same schedule the oil market assumes.
The political clock ran fast. Two days from signature to blockade lift. The oil market traded that clock and priced Brent accordingly: down 23% in a month.
The physical clock runs slower. The central Hormuz channel has approximately 80 mines. UK and French naval forces are leading the clearing operation. The Pentagon estimates 40–50 days for operational confidence. Ships are currently using secondary routes along Oman’s coast and through Iranian territorial waters — a workaround, not a reopening.
The insurance clock is the slowest of all. And it is the one that actually determines whether a commercial vessel sails.
Why Underwriters Don’t Care About Your Ceasefire
A ship doesn’t move because a president signs a document. A ship moves when its owner can insure it, its crew will board it, and its charterer will pay for it. Insurance is the binding constraint. Everything else is commentary.
Here is what the insurance market looks like on Day 2 of the ceasefire:
Contracts are seven days. Renewable at the underwriter’s discretion. That means an insurer can reprice or withdraw coverage every week, based on what happened in the water — not what happened at a signing ceremony.
“War risk rates are unlikely to fall after ceasefire. Actuarial pricing resets only when sustained incident-free transit data accumulates — a process the industry measures in years, not press conferences.”
— Willis Towers Watson, May 2026
This isn’t opinion. It’s how actuarial science works. War-risk premiums are priced on loss history and incident frequency, calculated over rolling windows. The Hormuz crisis generated 46 shipping incidents and 14 seafarer fatalities over 111 days. That data now sits in every underwriter’s model. It doesn’t vanish because someone signed an MOU. It gets diluted only when enough incident-free transits accumulate to shift the ratio.
Howden Re, one of the world’s largest reinsurance brokers, went further: the Red Sea crisis of 2024–25 and the Hormuz crisis of 2026 together represent a permanent structural repricing of marine war risk. Not a spike. A new baseline.
The Government Had to Become the Insurer
When the private insurance market effectively closes a waterway — not by refusing to write policies, but by pricing them at levels that make transit commercially unviable — the only entity that can reopen it is a sovereign willing to absorb the risk.
That’s exactly what happened.
On March 20, the US International Development Finance Corporation launched a $20 billion reinsurance facility with Chubb as lead underwriter. Two weeks later, it expanded to $40 billion with Travelers, Liberty Mutual, Berkshire Hathaway, AIG, Starr, and CNA.
Half the risk sits with the US government. Half with private insurers. The government had to offer its own balance sheet because the market wouldn’t carry the exposure alone.
Today, Lloyd’s and Chubb launched a $200 million consortium offering primary hull, P&I, and cargo coverage. Available from June 19. Subject to sanctions screening, underwriting criteria, and — crucially — mine clearance progress.
This is not normal. Governments don’t typically become marine insurers. The DFC’s mandate is development finance in emerging markets. It was repurposed because no private mechanism could bridge the gap between political resolution and actuarial confidence.
And even with $40 billion of government-backed capacity, the facility only covers eligible vessels, only under specific conditions, and only for war-related losses. It doesn’t replace the P&I clubs that withdrew. It doesn’t reset seven-day pricing cycles. It’s a bridge — and bridges are built because the gap is real.
What Iran Did Today
This morning, Iran’s PGSA published terms requiring all transiting vessels to carry PGSA-approved insurance. During the 60-day MOU window, this insurance is free. No payment changes hands. The sanctions exposure — the PGSA was designated by OFAC in May — is arguably manageable when no money moves.
But the requirement establishes precedent. On day 61, the PGSA “reserves the right to introduce insurance fees in the future.”
This is the insurance version of the toll plaza I mapped in May. Iran is building a jurisdictional framework over strait transit using the ceasefire as cover. The MOU says no tolls for 60 days. It doesn’t say anything about mandatory insurance. Iran found the gap and moved into it — on day 2.
The double insurance trap
A vessel transiting Hormuz now needs: (1) private war-risk insurance at 30x pre-crisis rates, on 7-day contracts, possibly backed by a government reinsurance facility — and (2) PGSA-approved insurance mandated by the country that mined the waterway. Two parallel insurance systems. One imposed by the market that prices the risk. One imposed by the state that created it.
What the Shipping Industry Sees
Richard Meade, editor-in-chief of Lloyd’s List, wrote this week that despite the MOU, “insurers will not be the ones to embrace the 60-day ceasefire.” Underwriters want “solid evidence” of “lasting security.”
Here is what lasting security requires, and how long each element takes:
| Requirement | Status | Timeline |
|---|---|---|
| Central channel mine clearance | Not started | 40–50 days minimum |
| Independent verification of safe passage | Not started | After mine clearing |
| Sustained incident-free transit data | 0 of 12–36 months | 12–36 months (WTW) |
| Reinsurance treaty renewal cycle | Next: Jul 1 | Quarterly: Jan, Apr, Jul, Oct |
| P&I club re-entry to Gulf coverage | 6 clubs still withdrawn | After reinsurance repricing |
| OFAC sanctions clarity on PGSA | Ambiguous | No guidance issued |
| Lloyd’s JWC Arabian Gulf redesignation | Full conflict zone | Review after sustained calm |
Every row in this table must resolve before premiums normalize. They are sequential, not parallel. Mine clearing must finish before verification. Verification must accumulate before actuarial models shift. Actuarial models must shift before reinsurance treaties reprice. Reinsurance must reprice before P&I clubs re-enter. P&I clubs must re-enter before shipowners can secure full coverage at commercially viable rates.
This is a chain, not a switch. And the chain’s first link — mine clearing — hasn’t started in the central channel.
The Number
Nearly 10 million barrels of crude were observed transiting or positioned near the strait on Thursday. The first Saudi-owned tankers moved since the conflict began. Twenty ships crossed overnight, using the Omani coastal route.
That’s traffic. It’s not normalization.
Pre-war Hormuz handled 94 commercial transits per day. Polymarket puts the probability of traffic returning to normal by June 30 at 23.5%. Eight hundred vessels remain stranded inside the Gulf.
One of these numbers is wrong. The oil market and the insurance market are making contradictory assessments of the same waterway on the same day. The oil market says Hormuz is reopening. The insurance market says it isn’t safe.
The insurance market has a better track record on this question. Ships don’t move on oil prices. They move on insurance quotes.
What Happens Next
The July 1 reinsurance treaty renewal is the first structural checkpoint. Reinsurers will assess the first two weeks of post-MOU data: mine clearing progress, incident count, traffic volume, PGSA compliance patterns. If the data is clean, some softening in renewal terms is possible. If there’s a single incident — one mine detonation, one drone near a vessel, one PGSA enforcement action — rates harden further.
The MOU expires August 16. If there is no follow-on agreement, every assumption embedded in $80 Brent evaporates simultaneously: the deal, the mine clearing cooperation, the fragile insurance bridge, the fleet repositioning. The insurance clock doesn’t care about any of this. It just keeps counting incident-free days.
Twelve months of them.
At minimum.