Hormuz Ceasefire Collapses: Tanker Traffic Halts as Oil Logs Best Week Since April

The ceasefire that was supposed to reopen the world’s most important oil chokepoint lasted 20 days. On July 7, three commercial vessels — a Qatari LNG carrier, a Saudi crude tanker, and a Liberia-flagged crude tanker — were struck by projectiles while transiting the US-recommended Omani corridor through the Strait of Hormuz{{cite:aa2f267dd819}}. Within 48 hours, the corridor was empty. By Friday, tanker association INTERTANKO confirmed that southern-route transits had fallen to single digits, while the overall traffic count had dropped from a post-ceasefire peak of 72 ships on June 24 to just 23 on July 9{{cite:38c311afcdce}}{{cite:aa2f267dd819}}.

This is not a one-off incident. It is the second collapse of the same ceasefire in three weeks. Ships were struck on the Omani route on June 25 and 27, prompting US retaliatory strikes at the time. The pattern is now clear: Iran attacks vessels using the US-backed southern corridor, the US responds with military strikes, Iran retaliates, and the cycle restarts. Martin Kelly, senior intelligence analyst at EOS Risk Group, described it bluntly: “There will now be a bit of back and forth between the US and Iran before they make friends again, shipping will peak and trough cautiously until Iran attacks another ship and the cycle starts again”{{cite:aa2f267dd819}}.

What broke this time

The June 17 memorandum of understanding committed Iran to use “its best efforts for the safe passage of commercial vessels with no charge for 60 days” and to conduct dialogue with Oman on the strait’s future administration{{cite:aa2f267dd819}}. The vagueness was the flaw. Iran interpreted the agreement as granting it control over transit routes and the right to levy fees; the US and its allies read it as a return to free passage. After the deal, the US-led Joint Maritime Information Center recommended ships take an Omani route through the south of the strait, bypassing Iranian-controlled lanes. Traffic on that route grew to 28 vessels by June 25, overtaking the Iranian route{{cite:aa2f267dd819}}. Then the strikes began.

This week’s attacks were more intense and geographically broader than previous ceasefire breakdowns, according to INTERTANKO, with significant strikes affecting Bahrain and Kuwait{{cite:38c311afcdce}}. The US military conducted retaliatory strikes on more than 80 Iranian sites, and Washington revoked a Treasury license that had temporarily eased sanctions on Iranian oil exports{{cite:434ca3722646}}. At the NATO summit in Ankara on July 8, President Donald Trump declared the ceasefire “over”{{cite:aa2f267dd819}}.

The market tell: oil’s best week since April, but still half the war premium

Brent crude settled near $76.25 per barrel on Friday, with WTI around $72.09{{cite:f87bf8f7fbac}}. Both benchmarks are up roughly 6% for the week — Brent’s best weekly performance since April and WTI’s since May{{cite:434ca3722646}}. Yet that rally should be read in context. When the first tanker was struck on July 7, Brent was coming off a four-month low near $73 and moved only about 2% on the day. As one analysis noted, the market that once added a $40 war premium on the threat of a Hormuz closure added roughly a dollar and a half on an actual strike{{cite:2e5cf21d1b69}}.

The reason is oversupply. Saudi Aramco cut prices by the largest margin in decades, Iraq trimmed Basrah prices, and the UAE’s ADNOC is offering crude several dollars below the Dubai benchmark — loading it at Sohar, on the Gulf of Oman side of the strait, outside the danger zone{{cite:2e5cf21d1b69}}. Goldman Sachs cautioned that renewed hostilities could stall the Hormuz recovery, but its analysts noted that Iran’s willingness to allow safe passage — not transportation capacity — is the binding constraint{{cite:9c735620a4a1}}.

Energy stocks tracked oil higher on Friday: ExxonMobil (XOM) closed at $138.83, up 1.0%; Chevron (CVX) at $176.40, up 1.4%; and ConocoPhillips (COP) at $109.04, up 0.9%{{cite:9d4795699a42}}. Defense names also advanced — Lockheed Martin (LMT) gained 1.0% to $523.22 and Northrop Grumman (NOC) rose 1.4% to $539.63{{cite:9d4795699a42}} — consistent with the pattern observed when the ceasefire first broke earlier in the week{{cite:434ca3722646}}.

The IEA’s alarm: first demand decline since 2020

On the same day the ceasefire was unraveling, the International Energy Agency delivered a stark baseline. Global oil demand is set to decline by 1 million barrels per day year-on-year in 2026, the first annual decrease since the Covid-19 collapse of 2020{{cite:f87bf8f7fbac}}. The contraction is “highly skewed in both product and regional terms” — the Hormuz closure disrupted Persian Gulf exports, hitting producers and refiners across the Middle East and beyond.

The IEA’s forecast rests on the assumption of a ceasefire and gradual reopening of Hormuz — an assumption that looks increasingly untenable. “Renewed exchanges of fire in the Gulf this week highlight the risks of not reaching a lasting peace agreement, which is a must for the normalization in oil markets,” the agency wrote{{cite:f87bf8f7fbac}}. Toril Bosoni, IEA’s head of oil and markets, told CNBC that recovery will not be “swift or linear” and described a “very uncertain and unstable situation” in the region{{cite:f87bf8f7fbac}}.

The supply picture is double-edged. Global supplies rose by 4.1 million bpd in June but remained 9.4 million bpd below pre-war levels{{cite:bc193e424cb4}}. The world has absorbed the loss of over a billion barrels of oil supply since the Iran war began in late February, but buffer reserves are now drained — meaning a fresh sustained disruption would find thinner cushions{{cite:9c735620a4a1}}.

The quiet indicators worth watching

Several signals beneath the headlines point to how fragile the next 30 days are:

The mine-clearing timeline gap. The Pentagon has told lawmakers that fully clearing the strait’s mines could take around six months, far longer than the 30-day deadline the framework set{{cite:2e5cf21d1b69}}. Even if the fighting stops tomorrow, the physical infrastructure of safe passage will not be restored on any political timeline.

The 60-day clock. The interim framework’s 60-day window to reach a final deal closes in mid-August{{cite:2e5cf21d1b69}}. Each cycle of strike-and-retaliate consumes days that cannot be recovered.

Iranian leadership transition. Supreme Leader Ali Khamenei’s death during the war and the still-absent public appearance of his reported successor, Mojtaba Khamenei, create a decision-making vacuum in Tehran{{cite:2e5cf21d1b69}}. Foreign Minister Araghchi has said negotiations on a final deal “will not commence if threats continue”{{cite:2e5cf21d1b69}}.

Iran’s sovereignty claim. Iran’s Revolutionary Guard Corps issued a statement on Thursday asserting that “foreign powers have no claim to this land or to the Strait of Hormuz” and warned that interference in determining shipping routes would “provoke a crushing response”{{cite:aa2f267dd819}}. On Friday, the UN shipping agency’s governing council agreed that countries should reject Iran’s efforts to impose sovereignty over the strait{{cite:38c311afcdce}}.

Prediction markets are not panicking. Polymarket traders assign a 63.5% probability to a US-Iran permanent peace deal by December 31, 2026, while pricing only a 5.5% chance of the US officially declaring war on Iran and a 16% chance of a US invasion before 2027{{cite:30d65e034443}}. The market consensus is that this escalation is a negotiation tactic, not a slide into full war — but that consensus is exactly the kind of complacent baseline that makes a genuine break more jarring if it comes.

The macro backdrop

The latest macro snapshot shows an economy absorbing the energy shock without acute stress — so far. CPI inflation runs at 4.17% year-over-year, the Fed funds rate at 3.63%, and the 10-year Treasury at 4.56%{{cite:a163db928552}}. The VIX sits at 16.9, well below levels that would signal broad fear. But consumer sentiment has cratered to 44.8 — down 14% year-over-year — and the historical analogs the data flags are mid-2006 and October 2007, periods that preceded major economic dislocations{{cite:a163db928552}}. A sustained oil price spike into the $80s or higher, layered on top of already-soft consumer confidence, would be the channel through which a Hormuz disruption transmits from the Gulf to the broader economy.

What to watch next

• Omani-route traffic data. If transits remain at zero through the weekend and into Monday, the corridor is effectively closed and Gulf exporters loading inside the strait — primarily Saudi Arabia at Ras Tanura — face the highest risk premium.
• The mid-August deadline. Whether technical talks between US and Iranian officials continue despite the fighting, as gCaptain reported{{cite:38c311afcdce}}, will signal whether the framework is salvageable or dead.
• Mojtaba Khamenei’s public emergence. A successor who consolidates power quickly could either stabilize or harden Iran’s position on strait control.
• Brent versus the $80 threshold. A breakout above $80 would mark the return of a meaningful war premium and likely transmit into gasoline prices — the consumer-sentiment channel.
• IEA’s next monthly report. If the agency revises its demand-decline estimate deeper or pushes back its recovery timeline, the surplus-versus-disruption balance shifts.
• UN shipping agency action. The governing council’s call to reject Iran’s sovereignty claim over Hormuz is a diplomatic signal that the international consensus on free passage is hardening, which could narrow the political space for a face-saving compromise.