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Iran Conflict 2026
28MAY

US crude posts 35.6% weekly gain, record

4 min read
08:49UTC

US crude futures gained 35.63% in a single week — the biggest move in the contract's 43-year history — while an insurance collapse beneath commercial shipping created a disruption floor that no ceasefire can quickly reverse.

ConflictDeveloping
Key takeaway

The 35.63% weekly gain reflects markets pricing a genuine physical supply disruption rather than merely a geopolitical risk premium, because no production buffer large enough to substitute for Hormuz transit at scale exists.

US crude futures posted a 35.63% weekly gain — the largest in the history of the contract, which dates to 1983. No single week during the 1990 Iraqi invasion of Kuwait, the 2008 run to $147, or the 2020 pandemic collapse and recovery produced a comparable move. Brent reached $92.69 on Friday, briefly touching $94, having risen approximately 27% since strikes began on 28 February . Qatar's energy minister warned of $150 per barrel if the Strait of Hormuz remains closed . Morgan Stanley raised its 2026 Brent forecast to $80 from $62.50 — a revision already $12 below spot prices at the time of publication, a measure of the speed at which the market has outrun institutional forecasting.

VLCC freight rates hit an all-time high of $423,736 per day — a 94% increase from the prior Friday close. In stable markets, VLCC day rates typically range between $30,000 and $50,000. At current rates, shipping costs alone add approximately $3–4 per barrel before crude reaches a refinery — a surcharge borne by every oil-importing economy whether or not it is party to the conflict. Physical supply has also been hit directly: Iran struck the Shaybah oilfield, targeting approximately one million barrels per day of Saudi production capacity , and Bahrain's BAPCO Sitra refinery, which processes 267,000–380,000 barrels per day, shut two crude processing units for safety inspection after Thursday's missile strike . But the supply destruction is secondary to the structural problem beneath it.

Every major Protection & Indemnity club's War risk coverage for the Persian Gulf expired at midnight on 5 March . More than 150 vessels sit at anchor in The Gulf of Oman and Arabian Sea. Trump's Development Finance Corporation insurance programme and promised Navy convoy escorts remain non-operational; the US Navy has not launched a single escorted commercial passage. The energy disruption now operates on two separate and independent timelines. The military timeline could theoretically end with a ceasefire tomorrow. The insurance timeline cannot. P&I reassessments require weeks of underwriting review, loss modelling, and reinsurance negotiation regardless of what happens on the battlefield. Commercial shipping through Hormuz is effectively suspended even if hostilities cease today. Goldman Sachs's revised Q2 forecast of $76 per barrel is arithmetically consistent with restored Hormuz flow before June — an assumption that requires the insurance market to move faster than its institutional structure has ever permitted. For oil-importing economies — the eurozone, Japan, South Korea, India — the question is no longer what the war does to prices but how long the insurance gap persists after the war ends. The answer, based on prior P&I reassessment cycles, is measured in weeks to months, not days.

Deep Analysis

In plain English

Oil prices jumped nearly 36% in a single week — the largest weekly rise since oil futures trading began in 1983. Oil is the base cost for almost everything: petrol, heating fuel, plastics, fertiliser, and the fuel powering ships and planes that carry other goods. A rise of this size means higher prices across most categories of consumer spending, typically with a 4–8 week delay as the cost works through supply chains from refineries to petrol stations to supermarket shelves.

Deep Analysis
Synthesis

The simultaneous movement of spot prices and freight rates to historic extremes signals that the market is no longer pricing a temporary geopolitical risk premium but re-rating the structural cost of Gulf supply. Risk premia dissipate with ceasefires; structural re-ratings persist until new infrastructure or alternative supply routes are established — a distinction with direct implications for how long consumer price effects will outlast any military resolution.

Root Causes

The Hormuz chokepoint carries 17–20 million barrels per day — approximately 20% of global daily oil demand — with no alternative maritime routing at comparable scale. Overland pipeline alternatives (Saudi Petroline at roughly 5 million bpd; UAE's Habshan-Fujairah pipeline at roughly 1.5 million bpd) cannot compensate for even a partial Hormuz closure. This geographic concentration was a known structural vulnerability that markets consistently under-priced in peacetime because simultaneous US-Iran-Israel conflict was treated as tail risk rather than a base-case scenario requiring premium.

What could happen next?
  • Consequence

    A sustained $90+ oil price will add 0.5–0.8 percentage points to CPI in major economies, complicating central bank rate decisions in economies already navigating post-pandemic inflation legacies.

    Short term · Assessed
  • Risk

    Asian strategic petroleum reserve drawdowns can sustain normal refinery throughput for 90–150 days; beyond that window, physical rationing becomes a live policy option in energy-import-dependent economies.

    Medium term · Suggested
  • Consequence

    Petro-state sovereign wealth funds face a paradox: higher oil revenue from surviving production, but regional equity and real-estate assets under pressure from conflict risk — a split that complicates their portfolio management and fiscal planning simultaneously.

    Short term · Suggested
First Reported In

Update #26 · President orders halt; IRGC ignores him

CNBC· 7 Mar 2026
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Causes and effects
This Event
US crude posts 35.6% weekly gain, record
The energy disruption now operates on two independent timelines: a military timeline that could end with a ceasefire and an insurance timeline that cannot, because every major P&I club's war risk coverage expired on 5 March and reassessments take weeks regardless of battlefield developments, creating a structural price floor independent of whether fighting stops.
Different Perspectives
Iran human rights monitors (Amnesty International, Iran HRM, Hengaw)
Iran human rights monitors (Amnesty International, Iran HRM, Hengaw)
Monitors documented 30 women held on capital moharebeh charges in a basement prison ward, Benyamin Naqdi's death sentence with a forced-confession broadcast, and 39 political executions since February. Iran's security courts have processed protest cases at uninterrupted wartime tempo regardless of the diplomatic track.
Lloyd's of London (war-risk underwriters)
Lloyd's of London (war-risk underwriters)
Lloyd's held its Hormuz war-risk designation at $10-14 million per voyage while Brent fell 19%, maintaining a structural divergence from futures pricing. Underwriters require a UN Security Council resolution or government certification letter, not diplomatic optimism, before de-listing the strait.
Oman (Sultan Haitham's government)
Oman (Sultan Haitham's government)
Muscat issued a mine alert in its own territorial waters while denying any Hormuz toll plan after US Treasury threatened sanctions. A suspected mine in Omani waters on the same weekend as US financial pressure forces Muscat to demonstrate sovereignty without appearing to choose sides.
China (PRC)
China (PRC)
Beijing sent scholars rather than its defence minister to Shangri-La for the second year running and addressed Taiwan and multilateralism without mentioning Iran. China maintains its bilateral energy corridor protection with Tehran while refusing the diplomatic exposure of a public position at multilateral forums.
Iran Supreme National Security Council
Iran Supreme National Security Council
The SNSC framed the unsigned MOU as a 10-point Iranian victory with enrichment already recognised, and the foreign ministry rejected Trump's nuclear conditions within hours. Tehran treats each unsigned day as validation that Iran has retained its stockpile without surrendering it.
Trump administration (CENTCOM/White House)
Trump administration (CENTCOM/White House)
Trump posted three non-negotiable public conditions while CENTCOM disabled a commercial ship and Hegseth threatened resumed strikes from Singapore. The administration treats the unsigned MOU as leverage to extract maximum Iranian concessions before any ceasefire instrument is committed to paper.