Oil Hits $100 as Hormuz Collapses and 60-Country Tariffs Take Effect

Two geopolitical shocks converged on markets this week, and the quiet indicators say neither is close to resolving. The first is kinetic: Houthi attacks on Saudi tankers pushed Brent above $100 a barrel for the first time since May, even as Strait of Hormuz traffic collapsed to a single vessel. The second is legislative: at 12:01 a.m. Friday, new Section 301 tariffs of 10 to 12.5 percent took effect on 60 U.S. trading partners — covering 99 percent of imports — replacing expiring stopgap levies. Together they form a twin squeeze on global supply chains that markets are still pricing in.

The Chokepoint Crisis: Hormuz and the Red Sea

The escalation pattern is unmistakable. On Monday, Yemen’s Houthis declared a “maritime embargo” against Saudi Arabia, emailing shipowners that “vessels are banned from loading or discharging cargo at any Saudi ports” and may be targeted “in any location within operational reach”^[1]. At least seven oil tankers made sharp U-turns near Yemen after the announcement, and at least eight more inbound vessels reversed course rather than enter the Bab al-Mandeb Strait^[1].

The threat to Saudi exports is severe because the Red Sea had become Saudi Arabia’s workaround for the already-closed Strait of Hormuz. Since the U.S.-Israeli war with Iran effectively shut Hormuz, Saudi Arabia diverted more than 70 percent of its crude through an east-west pipeline to the Red Sea port of Yanbu, shipping roughly four million barrels per day from there — up from about 973,000 a year earlier^[1]. If the Bab al-Mandeb Strait closes too, the only remaining route to Asian buyers is around the southern tip of Africa — a detour that adds weeks of transit time and substantial freight cost.

Brent crude settled at $100.69 on Thursday, up $6.62 or 7 percent, with WTI closing at $92.19, up $5.36 or 6.2 percent^[2]. By Friday, prices retraced — Brent fell $3.59 to $97.10, WTI dropped $3.14 to $89.05 — but both remained on track for weekly gains exceeding 8 to 10 percent^[3]. The pullback reflected profit-taking, not de-escalation: the underlying supply threats intensified.

Strait of Hormuz traffic tells the story. Ship-tracking data from Kpler showed only one vessel transited the strait on Thursday, the lowest daily count since May 7^[4]. Rystad analyst Janiv Shah noted that disruption levels are nearing the peaks seen in March^[3]. JPMorgan analysts estimated that each additional month of disruption adds roughly $7 to $8 per barrel to Brent, potentially lifting monthly averages to around $114 if disruptions extend to three months^[3].

Washington is weighing a major escalation. Trump told Axios he was “close” to deciding on a “massive attack” that could exceed the opening strikes of the war^[5]. Over 150 medical personnel have been surged to Landstuhl Regional Medical Center in Germany — the primary overseas treatment facility for U.S. troops wounded in Middle East combat — to handle potential casualties from expanded operations^[5]. Tehran has specifically asked the Houthis to intensify their maritime campaign in the event of a larger U.S. military attack on Iran^[5], meaning a weekend escalation could compound the shipping crisis across both chokepoints simultaneously.

The Tariff Wall, Rebuilt on Section 301

While oil commanded the headlines, a quieter but equally consequential shift took effect at midnight. The Trump administration replaced its temporary Section 122 import surcharge — a 10 percent worldwide tariff that expired Friday after 150 days — with a new Section 301 regime targeting 60 economies with levies of 10 to 12.5 percent^[6][7].

The legal architecture matters. Section 301 of the Trade Act of 1974 survived court challenges during Trump’s first term, when it was used to impose tariffs on China. By contrast, the Supreme Court struck down the administration’s earlier IEEPA-based tariffs in February, forcing refunds to importers^[7]. The Section 122 stopgap was always time-limited; the administration has now shifted to a more durable authority, charging that affected countries have inadequately enforced bans on goods produced by forced labour^[7].

U.S. Trade Representative Jamieson Greer framed the move as both a human rights and trade-distortion measure. But John Diamond of the Baker Institute was blunt: “It’s a little bit ridiculous to think that over 60 major trading partners, including countries in the EU, are really relying on that much forced labour”^[7]. The forced-labour framing appears to be the legal vehicle for a broader tariff strategy, one designed to withstand the judicial scrutiny that felled the IEEPA levies.

The EU signaled relief that the new rates did not breach the terms of a transatlantic trade truce^[6]. China’s response was sharper: Beijing “opposes” the new tariffs and warned against trade wars^[8]. Meanwhile, USTR has launched a separate Section 301 probe into whether 16 countries accounting for 70 percent of U.S. imports have engaged in overproduction — a process that could produce another tariff wave once the investigation concludes^[7].

Customs specialists told The Loadstar that the biggest challenge will not be the headline duty rates but the complexity of navigating 60 different bilateral tariff schedules simultaneously^[6]. Importers face a compliance landscape where the same product may carry different rates depending on origin, and where the legal basis for each levy may shift as investigations proceed.

The Kazakhstan Wildcard: A Third Supply Disruption

The supply squeeze is not confined to the Middle East. Kazakhstan, one of the world’s largest oil exporters, temporarily reduced crude production after suspected Ukrainian drone attacks forced the shutdown of the Caspian Pipeline Consortium (CPC) marine terminal on Russia’s Black Sea coast^[9]. Four drone strikes hit tankers carrying Kazakh crude in four days^[9].

The CPC terminal at Novorossiysk is the primary export route for Kazakh crude to global markets. Kazakhstan’s energy ministry confirmed that loading operations were suspended and production volumes reduced, though it did not specify the scale of the cut^[9]. Russia separately reported striking three Ukrainian ports overnight, targeting fuel reserves and loading infrastructure^[3].

This matters because it adds a third front to the energy supply crisis. Hormuz constrains Gulf exports. The Red Sea threatens Saudi Arabia’s diversion route. And now the Black Sea CPC corridor — handling roughly 1 percent of global oil supply — is intermittently shut. None of these is individually catastrophic, but the compounding effect narrows the system’s buffer. As Kpler analyst Naveen Das told BBC Verify: “We could weather it for two weeks, three weeks, even a month, but even in that time, we will see higher freight rates, higher energy prices and that bleeds into higher energy consumer costs”^[1].

What the Market Is Saying

Energy majors showed a muted reaction on Friday despite the oil spike. ExxonMobil (XOM) traded at $156.61, down 0.18 percent, as of 16:28 ET^[10]. Chevron (CVX) was essentially flat at $194.50^[10]. The muted response suggests equity markets are pricing the oil spike as a temporary geopolitical premium rather than a durable earnings catalyst — or that the Friday pullback in crude tempered enthusiasm. Tanker operator Scorpio Tankers (STNG) traded at $79.16, down 0.30 percent^[10], a surprisingly muted read given the freight-rate implications of rerouting around multiple chokepoints.

The divergence between the oil market’s alarm and equity markets’ calm is itself a signal. Either oil retraces quickly on de-escalation, validating the equity read, or equities are lagging and will need to catch up to the supply reality. The pattern that should worry observers is that each of these chokepoints has been disrupted before, but never all at once, and never with the explicit threat of a “massive” U.S. military escalation layered on top.

What to Watch Next

• Weekend escalation risk. Trump told Axios he is “close” to deciding on a “massive attack” on Iran^[5]. If strikes occur this weekend, Monday’s oil open will gap and tanker rates will spike further. Watch for Iran’s response — specifically whether Tehran formally closes Hormuz or delegates retaliation to Houthi action in the Red Sea.

• Houthi enforcement of the Saudi embargo. Ship-tracking data will reveal whether the Bab al-Mandeb transit count holds or collapses further. The EU naval force Aspides has already recommended that vessels linked to Israeli, U.S., or Saudi interests avoid the Red Sea and Gulf of Aden^[1]. If commercial traffic broadly heeds that advisory, the route effectively closes.

• CPC terminal status. Watch for updates from Kazakhstan’s energy ministry on CPC loading resumption. Each day of suspension tightens the global supply buffer further. Ukraine’s drone campaign against the terminal shows no sign of abating.

• China’s tariff response. Beijing has warned against trade wars^[8]. Any retaliatory measures — export controls on critical minerals, additional sanctions on U.S. entities, or acceleration of semiconductor self-sufficiency programs — would compound the supply-chain stress already building from the shipping crisis.

• Section 301 overproduction probe. USTR’s investigation into 16 countries is ongoing^[7]. If it concludes with findings of overproduction, a second tariff wave targeting roughly 70 percent of U.S. imports could follow — potentially at higher rates than the current 10 to 12.5 percent.

The base case is that all parties pull back from the brink, Hormuz traffic recovers, and oil retraces toward pre-crisis levels. But the indicators that precede a break are present in numbers that should not be ignored: medical personnel surging to combat hospitals, tanker U-turns multiplying, daily transits falling to one, and a legal tariff regime designed to be permanent rather than temporary. The question is not whether any single chokepoint closes — it is whether the system can absorb all three narrowing simultaneously.