The battle for control of the Strait of Hormuz has become the focal point of the Iran war. Over the past several months, both Iran and the United States have claimed the upper hand – and the competing rhetoric has caused considerable confusion and doubt.

At the moment, however, the evidence is clear: The United States, patrolling the strait with its navy, is gaining ground – and Iran is losing much of its control of the critical waterway.

More than 80% of vessel transits through the Strait of Hormuz over the past two weeks have taken the Omani route – a UN-authorized shipping channel that Iran vehemently opposes – according to Kpler, which tracks ships using transponders and satellite data.

Iran, declaring the strait under its control, has attacked dozens of ships that tried to to travel the waterway via the north coast of Oman. Despite the risk, most ships have recently chosen to ignore Iran’s demands and cross the strait with the promise of protection from US naval forces.

“It increasingly looks like Iran has at least partially lost control of the strait,” said Homayoun Falakshahi, head of crude oil analysis at Kpler.

That stands in stark contrast to a month ago, when Kpler observed virtually no shipping traffic via the Omani route. The sharp reduction in traffic around Iran’s preferred route has prevented Iran from charging tolls on ship traffic through the strait – as it did in the spring.

The expiration of the Memorandum of Understanding between the United States and Iran this week in theory allows Iran to begin charging tolls again. But it doesn’t appear the country has been able to, according to Kpler.

“Iran’s request to collect tolls is something that most Middle East folks don’t want to do and haven’t been doing,” said Dan Pickering, founder and chief investment officer at Pickering Energy Partners. “So the Oman route absolutely makes the most sense.”

Kuwait, Saudi Arabia and the United Arab Emirates have chartered Very Large Crude oil Carriers (VLCCs) – the biggest oil tankers – to transit out of the Persian Gulf via the Strait of Hormuz, then transfering the oil to customers’ tankers outside the danger zone in the Gulf of Oman, according to Andy Lipow, president of Lipow Oil Associates.

To evade Iran’s attacks, they’ve turned their transponders off, often for weeks on end. That so-called dark traffic appears to have eluded some data-tracking services like Kpler as well. Although some can be picked up on satellite, it’s harder to track via traditional means.

But the United States, with significant military force on the water, has eyes on all ships passing through the strait and has reported significantly higher oil shipping numbers than most traditional estimates had previously suggested.

Energy Secretary Chris Wright last week said that combined oil transits through the strait and rerouted around the waterway totaled around 15 million barrels per day over the course of a week – much closer to the 20-million-barrel average from before the war.

That led President Donald Trump to declare Monday that the United States has “total control over the strait,” a questionable claim he has reiterated often throughout the conflict. Iran’s continued attacks and oil flows still well below pre-war levels suggest the United States does not fully control the Strait of Hormuz.

But neither does Iran.

“If their goal is to be ‘in charge,’ then I’d say they were never completely in control to start with,” said Pickering. “It feels like their goal is deterrence, in order to be validated as in-control. I think they are still deterring.”

But if tankers are really getting as much oil through the strait as the United States claims, then Iran’s deterrence and control of the Strait of Hormuz is diminished compared to what it was a month or two ago.

Complicating matters: Oman and Iran are engaging in talks to restore freedom of navigation through the strait – absent the United States – much to Trump’s dismay. It’s not clear how those discussions will affect oil traffic or control of the waterway.

“I would take all the information and headlines ‘under advisement,’” said Lipow. “But it is fair to say that Iran has partially lost control of the strait.” (CNN)

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