Three Gulf Oil Chokepoints Are Simultaneously Impaired — and the Senate Is About to Hand Trump Permanent Tariff Powers

The Market Tell

Brent crude slipped to $88 on Friday, down 1.16%, as investors reacted to Saudi Arabia’s proposal to lead a 14-nation maritime defense coalition across the Bab al-Mandeb Strait, the Red Sea, and the Gulf of Aden^[1]. That dip is the wrong signal to read. The Saudi coalition proposal is itself the tell: it signals Riyadh’s own assessment that the current US naval enforcement architecture cannot keep these lanes open on its own. For the first time since the Iran war began on February 28, all three critical Gulf-to-Mediterranean oil corridors are simultaneously impaired — and a separate legislative track in Washington is about to give the president tariff powers that survive judicial review.

Front One: Hormuz Under US Naval Blockade

US Central Command confirmed Friday that its forces have redirected 24 commercial vessels, disabled two that failed to comply, and boarded two others as of July 30 while enforcing a naval blockade on traffic to and from Iranian ports^[2]. The blockade resumed July 14, and the figures have climbed steadily — 20 ships redirected as of July 29, then 24 the next day. In one incident, a Curaçao-flagged tanker heading toward Iran’s Kharg Island oil terminal ignored repeated warnings; US aircraft fired Hellfire missiles into its smokestack to disable it.

CENTCOM has repeatedly stated that the blockade does not restrict freedom of navigation for vessels transiting the Strait of Hormuz to or from non-Iranian destinations^[2]. But tanker traffic through the chokepoint remains well below pre-conflict levels, and Iran has at times claimed to control or close the strait entirely. The result is a functional bottleneck: one-fifth of global oil and LNG that normally passes through Hormuz is running at reduced volume, with no diplomatic breakthrough in sight^[1].

Front Two: Bab al-Mandeb and the Houthi Blockade on Saudi Shipping

Houthi militants in Yemen announced a naval blockade on Saudi Arabia last week, threatening all Saudi shipping through the Red Sea^[1]. Saudi Arabia had already rerouted most of its oil exports to the Red Sea and its Yanbu terminal after the war began, but Houthi threats and attacks have now stopped many tankers from using that route. Data from Kpler shows a growing volume of Saudi oil instead heading north up the Red Sea toward Suez and the Sumed pipeline^[3].

Crude loadings from the Sumed pipeline — which crosses Egypt from the Red Sea to the Mediterranean port of Sidi Kerir — have risen to 28.79 million barrels in July from 19.52 million in April^[3]. Around 30 ships have clustered at the Port Said anchorage at the canal’s Mediterranean end, compared to roughly 20 earlier in the week. The rerouting is working, but only barely: last week 1.4 million barrels per day were lifted from Sidi Kerir, compared to a historical weekly peak of 2.1 million bpd and the pipeline’s maximum capacity of 2.5 million bpd. There is little slack left.

Front Three: Suez Itself Under Threat

The third front opened on Wednesday, July 30, when a drone strike damaged two gas tankers at Damietta port in Egypt^[3]. Egypt confirmed Thursday that the blaze was caused by a drone strike, not an accident. No party has claimed responsibility.

The Suez Canal and Sumed pipeline had continued to offer safe, northbound export routes for Saudi Red Sea energy cargoes even as Iran and its Houthi allies fired on tankers in Hormuz and Bab al-Mandeb. The Damietta strike has now raised the prospect that the chokepoint itself — the last viable alternative route — could come under threat. Saul Kavonic, head of energy research at MST Marquee, estimated that disruption to the Suez route could endanger up to five million barrels per day of oil supply^[3].

S&P Global Energy’s Aly Blakeway noted that the market is not yet pricing in disruption to the canal itself^[3]. But insurers are already flagging higher war-risk premiums for Suez traffic. Martin Senior, head of LNG pricing at Argus, said insurers may command higher Additional War Risk Premiums for Suez in light of the Egypt attack. Matthew Wright, principal freight analyst at Kpler, warned that disruption to the Suez Canal would have an almost immediate impact on prices, with inflationary pressure from longer voyages and higher freight translated to consumers rapidly^[3].

The Price Picture: Temporary Calm, Structural Risk

Brent crude traded at $88 on Friday, down $1.03, while US West Texas Intermediate dipped over 2% to $81.70^[1]. In the previous session, Brent briefly climbed to an intraday high of $93.31 after Washington and Tehran exchanged strikes on each other’s military targets. The US military said it struck dozens of IRGC targets in Iran in response to Tehran’s ballistic missile attacks on US forces in the region.

The pullback reflects Saudi Arabia’s maritime coalition proposal — 14 countries including Turkey, Pakistan, Egypt, Sudan, and Djibouti have issued a joint statement backing the initiative^[1]. But the direction of oil prices depends heavily on how long the disruption lasts. JPMorgan estimates that every additional month of supply disruption could add $7 to $8 a barrel to Brent. A three-month disruption could push monthly average Brent to about $114^[1]. Goldman Sachs has warned that Brent could climb to $120 a barrel if shipping disruptions through Hormuz persist, though its base case still assumes tensions eventually ease, with Brent averaging $80 in Q4 and $75 next year^[1].

Energy equities reflected the ambiguity. As of the July 30 close, XOM finished at $157.08^[4], CVX at $192.56^[4], and COP at $119.03^[4] — all modestly higher on the day. The USO ETF, however, closed down 1.4% at $127.48^[4], tracking the crude pullback. The divergence between integrated oil stocks and the crude-tracking ETF suggests equity investors are pricing a longer-duration risk premium that the spot market’s daily fluctuations do not yet capture.

The Senate’s Tariff Weapon: Durable by Design

While the three-front oil crisis commands the immediate market’s attention, a quieter legislative process is creating a second-order risk with far more durable consequences. The “Lindsey O Graham Sanctioning Russia Act of 2026” cleared its first Senate hurdle this week in an 86-to-12 vote^[5]. Named for the late Senator Graham, the bill would impose sanctions on Vladimir Putin and more than 20 Russian officials and companies working with the Russian defense industry, target Russia’s shadow fleet of oil tankers, and give the president authority to impose tariffs of up to 100 percent on exports to the US from the top five purchasers of Russian energy — China, India, and Türkiye among them.

On Wednesday, President Trump ordered lawmakers to amend the bill to include tariffs covering Iran as well^[5]. That addition may delay the bill, as Democrats worry the Iran tariff provisions could be used against countries buying Iranian oil — meaning China. David Smith of the University of Sydney’s US Studies Centre told Al Jazeera that while Democrats would have supported the Russia bill, they are concerned about expanded tariff powers on countries buying Iranian oil^[5].

The bill’s significance extends beyond Russia or Iran policy. It would give Trump something he has wanted: the legislature’s permission to impose high tariffs on a durable legal basis. The Supreme Court’s 6-3 ruling in February 2026 invalidated many of Trump’s earlier tariff orders that relied on stretching old statutes^[5]. The Graham Act, by contrast, is new legislation crafted under the International Emergency Economic Powers Act, which would lawfully expand presidential tariff authority. As Smith put it: “This looks like new legislation that is going to lawfully expand his tariff authority”^[5].

EU-China: The Trade War Bites

The chokepoint crisis and the sanctions bill converge on China from two directions. Beijing’s top trade official told US counterparts on Thursday that China had “serious concern” over Washington’s latest trade restrictions^[6]. US Treasury Secretary Scott Bessent and Chinese officials discussed trade and rare earths in a call ahead of a planned Xi visit to the US later this year^[6].

Meanwhile, Beijing’s retaliation against the EU was swift and severe. After the EU added 14 Chinese companies to its latest Russia-related sanctions package, China gave Brussels just a one-hour warning before adding 14 EU defense organizations — including Rheinmetall, Europe’s biggest defense company — to its own export-control list^[7]. The Chinese measures carry extraterritorial reach, effectively cutting off European defense firms from Chinese-origin materials via overseas suppliers — a capability the EU’s own measures do not have.

One senior EU official described the response: “They have threatened for years but until now they barked a lot and didn’t bite. This time they didn’t bark much, but they bit”^[7]. The retaliation signals Beijing’s willingness to escalate against Western sanctions architecture at a moment when the Graham Act would give the US president authority to impose 100% tariffs on Chinese exports to America.

What to Watch Next

1. Saudi maritime coalition formation: Whether the 14-nation proposal translates into actual naval deployments, and whether Iran treats those patrols as legitimate or as targets. The coalition’s rules of engagement will determine whether it stabilizes the Red Sea or triggers a wider confrontation.

2. Graham Act House timeline: The bill now moves to the House, which is in summer recess. Watch for whether Trump’s Iran amendment costs Democratic votes and whether the final bill retains the 100% tariff provisions. The key question is whether the tariff authority survives conference committee intact.

3. Suez war-risk premiums: The Damietta drone strike is the first attack on the Suez-adjacent route. If insurers raise Additional War Risk Premiums for Suez transit, the cost will flow through to freight rates and, ultimately, to refiner margins and consumer prices — even without a canal closure.

4. China’s retaliation calculus: Beijing’s one-hour-warning retaliation against the EU demonstrates a shift from proportionate response to disproportionate escalation. If the Graham Act passes with Iran tariff provisions, China faces a simultaneous tariff shock from the US on two fronts — Russian oil purchases and Iranian oil purchases — and its response will set the tone for global trade relations through the Xi visit and beyond.

5. Kospi and Asian tech as a risk proxy: South Korea’s Kospi staged its sharpest reversal on record on Friday, rebounding from a month of wild swings after strong earnings from Microsoft, Amazon, and Meta^[8]. If Asian tech is the market’s risk-on barometer and oil is the risk-off barometer, watch which one breaks first. A sustained divergence — tech rallying while oil grinds higher — would signal the market is pricing growth and geopolitical risk on separate tracks, a pattern that has historically preceded a convergence event.

This article is research and commentary, not investment advice. All sourced facts are cited to their original publications.