---
title: "Shipping companies will decide when the Strait of Hormuz is truly open—not the U.S. or Iran &  Israel to sabotage?"
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post_id: "13786"
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published: "2026-06-21T18:58:40+00:00"
modified: "2026-06-21T19:00:27+00:00"
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[**Fortune.com**](https://fortune.com/2026/06/20/shipping-companies-insurance-strait-of-hormuz-traffic-us-iran-deal/)

> Just days after the U.S. and Iran signed a memorandum of understanding to reopen the Strait of Hormu**z, Tehran announced the critical waterway is closed again, threatening oil flows after they had barely started to rebound.** **(Thanks Israel!)**
> 
> On Saturday, I**ran’s military command said it closed the strait, citing continued Israeli attacks on Lebanon and U.S. “bad faith” in failing to uphold commitments to end the war.** It also warned that “if the aggression continues, subsequent steps have been planned.”
> 
> Not to be outdone, **President Donald Trump threatened to charge U.S. tolls for “services rendered as the Guardian Angel to the countries of the Middle East,”** if a final deal with Iran isn’t reached in 60 days.

***Guardian Angel Trump-* the entire reason the Straits are shut down is because the US and Israel attacked Iran**

> While the U.S. ended its naval blockade on Iran as part of the MOU, Central Command also said “**U.S. forces remain present and vigilant to ensure all aspects of the agreement with Iran are adhered to, obeyed, and in full force and effect.”**
> 
> For its part, Tehran’s new **Persian Gulf Strait Authority warned that ships must follow a regime-established route** that passes along the Iranian coast and that alternatives are prohibited.
> 
> And despite its deal with the U.S. banning tolls for 60 days, **the PGSA is requiring insurance that will eventually come at a cost.**
> 
> ***“At present, this insurance is provided free of charge to the vessel owner, with all expenses covered by the Islamic Republic of Iran,” Iran said. “The PGSA reserves the right to introduce insurance fees in the future, which will be determined by the relevant insurer. Owners will then be required to purchase and renew coverage accordingly.”***
> 
> For ships that require assurances of safe passage, recent developments aren’t helping. Oil prices tumbled after the U.S. and Iran announced the deal last weekend, **but a return to normal flows will take months.**
> 
> And until supplies recover, global oil inventories will continue to remain under pressure. **In the U.S., the Strategic Petroleum Reserve has already plunged to the lowest level since 1983.**
> 
> The situation in the Strait of Hormuz, which was the scene of regular skirmishes between the U.S. and Iran before the latest deal, highlights the private sector’s role.

##### **“But it’s not Iran or the US who decide that the strait is open—it’s shipping and insurance companies,” Eurasia Group senior analyst Gregory Brew posted on X.**

> While other Iran experts predicted Saturday’s announcement of the strait’s closure would scare off ships just as traffic was showing signs of climbing, Brew questioned if that will be a sufficient threat
> 
> Again, it’s up to the ships to decide.
> 
> “Will the Iranian announcement be enough to deter them? Or will Iran need to resort to force and directly violate the MOU’s terms?” he added.
> 
> Even before the latest flurry of mixed signals, the industry had doubts. One shipping executive told the New York Times on Friday that he deemed the conditions too uncertain for his ship to leave the Persian Gulf.

[**Israel ‘ready to sabotage’ US-Iran memorandum, Turkish top diplomat says**](https://www.trtworld.com/article/aafa9787901e)

> Foreign Minister Hakan Fidan cautions **that Israel may act cynically to derail the US-Iran agreement implementation during the ongoing regional diplomatic negotiations process**

**Trump is counting on it.**