DECISION SIGNAL SYSTEM | INTELLIGENCE PRODUCT

Diesel and Jet Fuel Supply

A 2026 Multi-Shock Convergence

Analytic Lane: Geoeconomic, with geopolitical and geostrategic dimensions

SCOPE NOTE

This assessment answers a single question. Is the world heading into a sustained diesel and jet fuel shortage in the second half of 2026? It is written for leaders allocating capital and managing exposure across energy, shipping, agriculture, aviation, and industrial logistics.

The assessment classifies the shock at intake, rates transmission through the Channel Activation Grid, and states decision windows. It applies ICD-203 tradecraft, with likelihood and confidence carried as separate axes. Source detail sits in the appendix rather than the body, consistent with clean-delivery discipline. Full evidence is available on request.

This is a point-in-time judgment. The situation moves quickly, driven mainly by the durability of the Hormuz ceasefire and the length of Russia’s export ban. Confidence levels below should be revisited as new information arrives.

This version rests on a deliberately wide source base. Beyond English-language wire services, it draws on Russian, Ukrainian, Iranian, and Gulf sources, plus commercial tanker-tracking data, specifically to test the initial draft for single-source and single-language bias. Where that wider base sharpens or complicates a judgment, the Source Confidence section says so plainly.

ASSESSMENT AND KEY JUDGMENTS

The world is not in a global diesel and jet fuel shortage. It sits closer to one than at almost any point in two decades.

This is not a single-cause story about Ukrainian drone strikes on Russian refineries. Four separate shocks are landing on a refining system that was already tight and under-invested. The Iran-Israel-US war disrupted Strait of Hormuz flows from February through June. That conflict flared again on July 7. Russia banned all diesel exports from July 8 through July 31. OPEC+ lost the UAE as a quota participant while global spare capacity was already thin. Layer the Ukrainian refinery campaign on top, and the result is record crack spreads, multi-decade-low inventories in the US and Europe, and a physical market with little room to absorb the next shock.

KJ-1. A sustained, multi-month, globally synchronized shortage in the second half of 2026 is not the base case. The odds rise to roughly even if the Hormuz ceasefire fails again or Russia extends or expands its export ban beyond July 31. The IEA base case still projects a return to surplus in 2027, but that forecast largely predates Russia’s July 8 diesel ban, which is a genuine and currently under-modeled downside risk.

Likelihood: Roughly even chance (conditional) Confidence: Moderate

KJ-2. Regional and episodic shortages, as distinct from one worldwide shortage, are already occurring and continue through Q3. Europe narrowly avoided a jet fuel crunch. Pakistan issued minimum-fuel flight advisories. Nigeria saw jet fuel prices spike sharply. Russia’s own domestic fuel crisis now touches roughly a third of its population.

Likelihood: Very likely Confidence: High

KJ-3. The single most important variable is the durability of the Hormuz ceasefire and reopening. The July 7 tanker attacks and the same-day US license revocation show a ceasefire that the market has treated as more solid than it is.

Likelihood: N/A (structural pivot) Confidence: High

KJ-4. Even absent a Hormuz reescalation, the Ukrainian campaign has already forced Russia into an outright diesel ban and gasoline output covering only about 65% of seasonal demand. That trajectory escalates rather than plateaus through the rest of 2026. The direction is now confirmed from inside Russia. On July 10, Deputy Prime Minister Novak admitted on the record that the strikes have caused real shortages, reversing months of Kremlin denials. The exact scale of lost refining capacity remains contested, and this assessment treats the true figure as most likely in the 20% to 30% band rather than the 42.7% headline a Ukrainian source has claimed.

Likelihood: Very likely (trend). Contested (magnitude) Confidence: High on trend. Low to Moderate on any single number

KJ-5. Second- and third-order effects are already in the official data. Food price inflation through diesel-dependent agriculture and fertilizer logistics, elevated shipping insurance, NATO-civilian jet fuel competition, and a fresh drag on disinflation intensify through Q3 regardless of whether a formal shortage is ever declared.

Likelihood: Likely and intensifying Confidence: Moderate to High

DSS INTAKE AND CHANNEL ACTIVATION

Intake classification. This is a mixed shock, and the composition matters. The Hormuz dimension is geopolitical: state and proxy military action against a physical chokepoint. The Russian export ban and the sanctions architecture are geoeconomic: economic instruments deployed for strategic ends. The two transmit differently, so the grid is read against both.

Channel Activation Grid

The grid rates the four transmission channels. Direct is the physical supply and price channel. GFC is the global financial conditions channel. Uncertainty is the confidence and risk-premium channel. Local is the domestic pass-through into the initiating and exposed economies.

Scissors-pattern check. The geopolitical component follows the expected pattern: a physical shock drives Direct up hard. The geoeconomic component does not bypass Direct here because the instrument is an export ban on the physical product itself rather than a financial sanction. That is the diagnostic tell. When an economic instrument acts directly on the molecule, it behaves like a supply shock on the Direct channel while still carrying geoeconomic second-order effects through GFC and Local. Do not extrapolate channel behavior from prior sanctions episodes. The state variables differ because inventories entered this episode near multi-decade lows.

Originator penalty. Russia, as the geoeconomic initiator, absorbs the cost as it inflicts it. The ban protects domestic supply but strands export revenue, deepens the domestic crisis it was meant to ease, and forces first-ever gasoline imports, including a shipment from the US West Coast. The instrument is defensive, not offensive, and the penalty is already visible in collapsed Urals pricing.

SITUATION OVERVIEW

Three reinforcing storylines run at once. Any assessment that isolates one of them misreads the risk.

The Iran-Israel-US war

The war began on February 28, killed the Iranian Supreme Leader, and damaged Middle East refining and export infrastructure. Saudi Arabia’s Ras Tanura, the world’s largest refinery, went on strike and restarted on March 18. The UAE’s Fujairah facility was hit. Iraqi oil exports collapsed by roughly 80%. A ceasefire process ran through spring, culminating in a June 17 memorandum of understanding and a June 22 US license authorizing Iranian oil sales through August 21. That calm broke on July 7, when tanker attacks near Hormuz pushed maritime threat assessments to severe, and the US revoked the license the same day.

Ukraine’s deep-strike campaign

The campaign reached new intensity in early July. The July 6 strike on Omsk, Russia’s largest refinery at roughly 460,000 barrels per day, was among the deepest yet and forced a full processing halt. Strikes on the TANECO complex and the Saratov refinery followed within days. Russia responded by banning all diesel exports from July 8 through July 31, on top of a gasoline export ban in place since April 2. Russia is now importing gasoline from India, Belarus, Kazakhstan, and, for the first time, the US West Coast.

A structural refining and OPEC+ backdrop

The system offered little cushion before either shock hit. Global refining capacity is growing only about 0.7 to 1.0 million barrels per day in 2026, roughly matching or slightly lagging demand in a normal year. OPEC+ lost the UAE as a quota member effective May 1, removing roughly 3.5 million barrels per day from the group’s collective quota math while spare capacity estimates remain disputed, ranging from near-zero to as much as 12 million barrels per day depending on the source.

The result is diesel and jet crack spreads at or near record highs simultaneously in the US and Europe, while inventories in the most important consuming regions sit at multi-decade lows.

DRIVER 1: UKRAINIAN STRIKES ON RUSSIAN REFINING

Ukraine’s campaign is now hitting facilities Russia previously treated as untouchable. The July 6 strike on Omsk, Gazprom Neft’s flagship and the last of Russia’s top eleven refineries to be hit, forced a full halt. Within 48 hours, strikes followed on the TANECO petrochemical complex and the Saratov refinery. Ukrainian tracking puts the campaign at more than 190 refinery strikes since January, roughly eleven times the prior year’s pace.

How much Russian capacity is actually offline is genuinely disputed, and the extent of the spread matters. A Ukrainian military source claims 42.7%. The IEA cites more than 20%. Carnegie’s Vakulenko estimates 13 to 17% for real-time simultaneous loss, arguing that higher figures conflate every facility ever struck, including those since repaired, with capacity down right now. An independent exile outlet, reading the same Ukrainian number more carefully, notes it describes the share of capacity at affected refineries rather than actual output loss, and puts the real reduction closer to 25%. One Ukrainian analyst goes the other way, at roughly half. The honest range runs from about 13% to 50%. This assessment treats the true figure as most likely in the 20% to 30% band, and treats the 42.7% headline as a combatant’s high-end framing rather than a neutral measurement.

The export impact is not in dispute. Russian refined product exports collapsed to 1.9 million barrels per day in June, the lowest on record and down 660,000 barrels per day year over year. Gasoline output covers only about 65% of seasonal demand. The domestic fuel crisis now affects roughly 50 million people, about a third of the population.

The strongest corroboration comes from inside Russia. Independent Russian exchange-data analysis found gasoline and diesel exchange sales fell to about 53% of January volumes by June, with sharp plant-level drops at named refineries. For months, the Kremlin blamed seasonal maintenance and panic buying. That line broke on July 10, when Deputy Prime Minister Novak admitted on the record that there are real problems and a real shortage, because refineries are partly offline for repairs from the strikes. A senior Russian official confirming strike-driven damage, in Russian, to a Russian audience, is stronger evidence than any Ukrainian or Western claim, because it removes the adversarial-source problem. Even pro-Kremlin military bloggers, who have every reason to minimize Russian vulnerability, described regional air defense as having failed at Omsk.

Analytic judgment. The campaign continues to escalate through Q3 rather than stabilize. Ukrainian, independent Russian, and even pro-Kremlin Russian sources all corroborate the direction, which is why trend confidence is high. The precise offline capacity remains contested, which is why confidence in any single point estimate is lower. Likelihood: Very likely (trend). Contested (magnitude). Confidence: High on trend, Low to Moderate on magnitude.

DRIVER 2: THE STRAIT OF HORMUZ

The Hormuz dimension is more consequential for global markets than the Russia dimension, because it touches the single most important oil chokepoint rather than one country’s export capacity. At the disruption’s peak, Gulf crude exports were down 60%, refined product exports down 70%, Hormuz crude tanker transits down 88%, and available jet fuel supply down 20 to 30%. The IEA characterized it as the largest oil supply disruption in history.

The spring ceasefire process appeared to stabilize the situation. It proved fragile. On July 7, tanker attacks near Hormuz pushed the maritime threat assessment to severe, and the US revoked the oil-sales license the same day. The market has treated the truce as more solid and durable than it is.

Who carried out the July 7 attacks is less settled than the first wire coverage implied, and that ambiguity matters. Iranian state media did not claim the strikes, which is itself telling, since Iran has publicly owned prior actions. Iran’s own UN mission privately described the episode as the work of a rogue hardline faction rather than a centrally directed strike. Gulf states, the UAE and Qatar, firmly attributed it to Iran. One Tehran-based analyst floated an accident theory, a tanker straying into a mine-clearing zone. Weighing a non-claiming Iranian posture against firm Gulf attribution and one dissenting theory, this assessment treats central Iranian responsibility as probable but not certain. The distinction is not academic. If the attack came from a faction acting without central control, future escalation is driven less by top-down Iranian strategy and more by internal factional dynamics, which are far harder to read through conventional state-level indicators.

Related flashpoints compound the risk. Houthi activity in the Red Sea and renewed Saudi-Houthi friction force tankers onto longer, costlier routes around the Cape of Good Hope, adding cost even without a direct closure of the Strait of Hormuz. A modeled full-closure scenario puts Brent near $200 per barrel, diesel and jet near $300 per barrel in major hubs, and global GDP down as much as 0.4%. That is not the base case. It is the tail, and the July 7 reversal shows how quickly months of de-escalation can unwind.

Analytic judgment. A renewed, sustained Hormuz-area escalation before year-end is a roughly even chance, given the July 7 pattern of rapid reversal and unresolved US-Iran dynamics. Moderate confidence reflects genuine uncertainty in adversary intent, now compounded by ambiguous attribution. If July 7 originated with a rogue faction rather than Iran’s central command, escalation risk becomes a function of internal Iranian control rather than strategic calculation, and harder to forecast. Likelihood: Roughly even chance. Confidence: Moderate.

DRIVER 3: RUSSIA’S EXPORT BANS AND THE SHADOW FLEET

Russia’s diesel export ban, running July 8 through July 31 on top of the gasoline ban since April 2, is a direct policy response to the domestic strain the refinery strikes created. Russia also banned jet fuel exports through November 30, though that carries a minor global impact because Russia is not a major jet exporter.

The diesel ban is the one that matters most for global balances. Russia has historically been one of the world’s largest diesel exporters. Removing that volume, even for a nominally temporary window, tightens an already stretched distillate pool at a time when US and European inventories sit near multi-decade lows.

The shadow fleet campaign layers on top. Successive EU sanctions packages steadily narrow Russia’s ability to move product outside Western-controlled shipping and insurance. By mid-June, more than 650 unique tankers had been jointly sanctioned, and roughly 54% of Russian seaborne oil was still moving on sanctioned vessels. That dependency raises operational risk and cost with every additional round. Urals crude has fallen back to roughly $42 per barrel, near its pre-war level, reflecting both the sanctions squeeze and diminished export capacity.

Analytic judgment. Russia extends the diesel ban beyond July 31 or reimposes it intermittently through the rest of the year. It has failed to adapt to the strike campaign and has no near-term path to restoring lost capacity. Moderate confidence reflects uncertainty about the Kremlin’s calculus regarding the trade-off between export revenue and domestic price stability. Likelihood: Likely. Confidence: Moderate.

DRIVER 4: OPEC+, VENEZUELA, AND SPARE CAPACITY

OPEC+ dynamics cut in mixed directions. The UAE’s exit, effective May 1, removed roughly 3.5 million barrels per day from the group’s quota, as demand for spare capacity rose. The remaining core members raised the August quota by 188,000 barrels per day, marking a fifth consecutive monthly increase, leaning into higher output even as spare capacity estimates range from near zero to as much as 12 million barrels per day.

Venezuela is the one genuinely supply-positive development. Following Maduro's January capture and a period of sanctions relief, Venezuelan exports rose to 1.25 million barrels per day by May. That offsets losses elsewhere only partially. Venezuelan crude is heavy and sour, not a clean substitute for the lighter, sweeter barrels lost from the Hormuz area and the Russian supply.

Other flashpoints add cumulative risk without individually being decisive. Taiwan Strait coercion, attacks on the Niger-Benin pipeline, Libyan production and political instability, the Sudan conflict, and repeated fire incidents at a major Pemex refinery complex each add friction to a system with no slack.

Analytic judgment. OPEC+ and Venezuela together provide a meaningful but incomplete offset. They do not fully cover losses from Russia and the Middle East if the situation in Hormuz re-escalates or the Russian ban is extended. Likelihood: Unlikely to fully close the gap. Confidence: Moderate.

DRIVER 5: STRUCTURAL REFINING CAPACITY

A structural capacity picture underlies all four geopolitical drivers, and it offered little slack even before 2026’s shocks. Closures removed Grangemouth, Shell’s Wesseling facility, LyondellBasell’s Houston refinery, and Phillips 66’s Los Angeles refinery. Additions brought Nigeria’s Dangote to a full 650,000 barrels per day in February, alongside Kuwait’s Al-Zour and China’s Yulong.

Netting these out, global refining capacity grows only about 0.7 to 1.0 million barrels per day in 2026, roughly matching or slightly lagging demand in a non-crisis year. The system was already running with minimal structural cushion before the strikes, the Hormuz war, and the Russian ban hit.

Two demand-side trends pull in opposite directions on diesel. Chinese electric truck sales overtook diesel truck sales in 2025, a long-run headwind. Diesel demand for data-center backup power is growing at roughly 9% per year through 2028, a structural tailwind tied to the AI buildout. Neither moves fast enough to affect the 2026 balance, but both shape how the market recovers into 2027.

SOURCE CONFIDENCE

A conflict this information-contested carries real risk of single-source bias. Russia, Ukraine, and Iran each have reason to shade their public statements, and English wire coverage sits downstream of all three. To test the initial draft, this assessment conducted a deliberate pass through Russian, Ukrainian, Iranian, and Gulf sources, as well as commercial tanker-tracking data. Three findings matter for how much weight to put on the numbers above.

What the wider base confirms

The Russian fuel crisis is real and severe, and this now rests on Russian evidence rather than adversary claims. Independent Russian exchange data shows fuel sales have roughly halved since January. A Russian deputy prime minister has admitted the shortage on the record. Even pro-Kremlin sources concede the damage. The Hormuz risk is equally well grounded. Commercial tracking shows the large majority of Gulf tanker traffic already moving outside the formal shipping lane or with transponders dark, and a near-standstill in transits after July 7. No source in the wider pass suggests any party is fabricating or materially exaggerating the crisis. Every major judgment in this report holds in one direction.

What it complicates

Two specific numbers get less certain, not more. First, the scale of lost Russian refining capacity. The headline 42.7% figure reflects capacity at the affected refineries, not actual output lost, and independent readings put the real reduction closer to 25%. The honest range runs from about 13% to 50%. This report treats 20% to 30% as most likely and flags the rest as genuinely disputed. Second, responsibility for the July 7 attacks on the Strait of Hormuz. Iran did not claim them and privately blamed a rogue faction, while Gulf states blamed Tehran directly. Central Iranian responsibility is probable, not certain, and that distinction changes how predictable further escalation is.

A monitoring finding worth carrying forward

Fast social and open-source channels beat wire services on discrete physical events, breaking the news of the Omsk strike about a day early. They did not anticipate Russia’s export ban, which conventional channels had signaled weeks in advance. The practical rule for ongoing monitoring: lean on open-source and tracking data for early warning on strikes and vessel movements, and on official statements and specialist trade press for policy moves. The large share of Gulf traffic already running dark is itself a warning indicator, because it makes a rapid, low-signal escalation harder to see coming.

DIESEL MARKET FUNDAMENTALS

Global distillate inventories are stretched thin across the two regions that set global prices. US distillate stocks ran roughly 6% below the five-year average in early July and fell to about 100 million barrels in late May, the lowest in more than two decades. European ARA gasoil stocks hit a multi-year low in late June. The UK’s diesel cover sits at roughly 20 days of consumption.

Crack spreads show how tight this market has become. The US 3-2-1 crack spread hit a record $64.58 per barrel on July 8, and European diesel margins exceeded a record $60 per barrel. US diesel futures posted their biggest single-day gain in four years on July 8, jumping 11.6%, in direct response to the Russian ban.

Against this backdrop, the IEA still projects a significant surplus emerging in 2027. That forecast predates or does not fully reflect the July 8 diesel ban, which is a fresh and under-modeled downside risk to the balance.

Analytic judgment. Diesel remains in a record-high crack spread environment through Q3. A genuine regional physical shortage in Europe, as distinct from a margin event, becomes a roughly even chance if the Russian ban extends past July 31 or ARA stocks fall further. Likelihood: Very likely (crack spreads). Roughly an even chance (regional physical shortage). Confidence: Moderate to High.

JET FUEL MARKET FUNDAMENTALS

Jet fuel has seen even sharper margin spikes than diesel. Global jet crack spreads hit a record $80 per barrel in April. Northwest Europe’s jet crack exceeded $121 per barrel in March, against roughly $30 before the conflict. The airline impact has been severe. IATA cut its 2026 global airline net profit forecast from roughly $41 billion to $23 billion.

Regional shortages have already forced operational changes. Pakistan issued a minimum-fuel flight advisory. Nigeria saw Jet A1 prices spike 270 to 300%. Europe came closest to a formal crisis, with airport bodies warning of a crunch within weeks before the situation eased. Australia’s reserves fell to roughly 30 days against a 90-day obligation.

A key mechanic buffers the system. Refiners can swing between jet and diesel since both are middle distillates produced by overlapping units. Refiners prioritized jet from February through May, then swung back to diesel as the price spread between the two turned negative. This flexibility means gains in one product often come at the expense of the other. A true simultaneous shortage of both is less likely than an oscillating shortage that shifts between them month to month.

Sustainable aviation fuel remains below 1% of consumption, so it is not yet a physical constraint, though it is creating feedstock competition with renewable diesel through the shared used-cooking-oil supply chain. That is a pressure point to monitor, not an acute driver today.

Analytic judgment. Jet fuel likely avoids a formal, sustained global shortage through Q3, but record crack spreads and airline profitability damage persist, with continued episodic regional shortages in fragile markets and parts of Europe if the Hormuz Strait re-escalates. Likelihood: Likely (avoids formal global shortage). Very likely (record spreads persist). Confidence: Moderate to High.

SECOND AND THIRD ORDER EFFECTS

Shipping and insurance

War-risk premiums for tankers transiting the Gulf spiked 16 to 20 times their pre-conflict level, rising from roughly 0.1 to 0.25% to as much as 5% of hull value. That cost passes through to every barrel crossing the strait, adding friction even to volumes that move successfully.

Agriculture and food prices

Diesel prices correlate strongly with trucking costs and explain a large share of their variance. On the farm, corn production needs roughly 7.5 gallons of diesel per acre, and the 2026 surge added an estimated $11.25 per acre in direct fuel cost. Fertilizer logistics add a second channel, with a large share of global urea and fertilizer exports moving through the Strait of Hormuz. These channels are already visible. US food-at-home CPI ran 3.2% higher year over year as of May.

Military and NATO logistics

Civilian jet fuel and military logistics draw from the same distillate pool. NATO’s single-fuel policy and the pipeline network that moves military fuel across Europe carry known dual-use vulnerabilities, and industry warned that military-priority allocation could start to affect civilian flights. On the Russian side, the strike campaign is inflicting serious attritional cost on military fuel logistics, with fuel-vehicle losses up sharply year over year.

Macroeconomics and inflation

The energy shock is a fresh drag on disinflation. The IMF revised its 2026 global inflation forecast up twice, from 4.4% in April to 4.7% in July. In its severe downside scenario, the IMF sees global growth near 2% with inflation approaching 6%, alongside explicit recession-risk warnings if the war in Iran worsens.

Analytic judgment. These effects are already measurable in official data, not speculative. They continue to intensify through Q3, even in scenarios where a formal shortage never materializes. Likelihood: Likely and intensifying. Confidence: High.

2022 PRECEDENT COMPARISON

The closest analog is Europe’s 2022 diesel crisis after the invasion of Ukraine and the subsequent embargo on Russian refined products. Russia’s share of Northwest Europe’s diesel imports collapsed from 53% to 2%. It resolved over 12 to 18 months through Saudi, Kuwaiti, and Indian reallocation, new capacity ramps, record US Gulf Coast exports, and demand destruction.

The comparison cuts both ways. The global refining base is structurally larger now, which should make any resolution faster than in 2022. But the current shock is larger and less geographically matched to substitute supply. The 2022 crisis was a single-source substitution problem. The 2026 situation is a multi-source, multi-region convergence, with Russia, the Middle East, and OPEC+ quota dynamics all moving at once. That is structurally harder to resolve through simple reallocation.

Analytic judgment. The 2026 shock is larger and more complex than 2022, but the larger refining base makes a full multi-year global shortage less likely than a repeat of 2022’s regional, resolvable-within-18-months pattern. Likelihood: Likely. Confidence: Moderate.

ALTERNATIVE ANALYSIS

Scenario A. De-escalation holds

If the Hormuz ceasefire stabilizes and the diesel ban lapses on schedule, the base case toward a 2027 surplus reasserts itself, and this stays a high-margin, high-price environment rather than a physical shortage. This is currently the more probable path, though only marginally, given the pattern of repeated reversals since February.

Scenario B. Hormuz reescalates into sustained conflict

If July 7 marks the start of renewed sustained conflict, the severe closure scenario becomes the operative framework, and a genuine multi-region physical shortage becomes likely rather than merely possible. Watch for further tanker attacks, any move to mine or directly threaten transit as opposed to proxy strikes, and US licensing decisions on Iranian oil.

Scenario C. The Russian ban becomes semi-permanent

If Russia extends the diesel ban in rolling increments, as it has already done with gasoline, the 2026 to 2027 distillate balance tightens structurally beyond what agencies now model, forcing a downward revision to the surplus narrative.

What would most change this assessment? A durable ceasefire holding through Q3 without incident, combined with the diesel ban lapsing on schedule, would lower the probability of a formal shortage and shift the assessment toward high confidence: no global shortage. Any confirmed direct Iranian military action against tanker traffic would shift it toward moderate-to-high confidence, with a regional shortage highly likely.

INDICATORS TO MONITOR

These indicators track the trajectory of the risk against a Green, Amber, Red framework rather than a single reading. Most sub-indicators currently sit Amber to Red, given record crack spreads, multi-decade-low inventories, and an unresolved Hormuz ceasefire.

KEY UNCERTAINTIES AND DISSENT

Several genuine uncertainties limit confidence and deserve explicit acknowledgment.

Ceasefire durability is the largest. The pattern since February, from truce to memorandum to license granted to license revoked within days of renewed attacks, points to an unstable equilibrium rather than a resolved conflict. Its next move turns on Iranian and US intent that current reporting cannot fully resolve.

Ban duration is a real open question. The diesel ban nominally expires July 31, but the gasoline ban, framed similarly, has already been extended. Whether Russia treats diesel the same way is unknown.

Normalization speed is uncertain even in the best-case de-escalation. War-risk premiums do not fall as fast as they rise, creating a lag between conflict ending and supply chains normalizing.

Inventory dynamics are disputed. Whether current drawdowns become self-reinforcing through hoarding or stabilize once the immediate shock passes cannot be resolved with current data. The pace of demand destruction from record prices is likewise uncertain and varies by region.

The share of Russian refining capacity offline is a genuinely disputed figure, not a settled fact. Estimates run from roughly 13% to 50% depending on method and source. This report’s treatment of 20% to 30% as most likely is a judgment under real disagreement and should be revisited as more independent Russian data becomes available.

Responsibility for the July 7 attacks on the Strait of Hormuz is probable, not certain. Iran did not claim them and privately cited a rogue faction, while Gulf states attributed them to Tehran and one analyst floated an accident. Central Iranian responsibility is the more likely reading, but the residual doubt bears directly on how predictable further escalation is.

These are named not as a hedge, but because the ceasefire durability and ban duration unknowns are the actual pivot points on which the first three key judgments depend.

CONCLUSION

The honest answer is not a simple yes or no. What is happening now is real and serious: record crack spreads in both products, multi-decade-low inventories in the US and Europe, an outright Russian diesel ban, and a Middle East ceasefire that cracked on July 7. But the world is not yet in a formal, sustained, globally synchronized physical shortage, and the base case still points toward a 2027 surplus absent further escalation.

The ICD-203-consistent framing is this. A genuine worldwide shortage is a real and rising possibility, not a remote tail. It remains contingent on two things not happening: a renewed, sustained Hormuz conflict and an extended or expanded Russian export ban. Both have already happened once this year, briefly. Both could plausibly happen again.

That profile, a threshold not yet crossed but with the causal conditions already demonstrated once, is exactly the risk that deserves active, near-daily monitoring rather than alarm or dismissal. Given the July 7 pattern of rapid reversal and Russia’s inability to adapt faster than the strike campaign degrades its refining base, the risk is trending in the wrong direction, even though it has not yet crossed into a formal global shortage.

Decision posture. Treat this as an Amber-to-Red exposure across energy-linked cost bases, logistics, and inflation-sensitive positions. The decision window is short. Reprice fuel-linked exposure and stress-test the severe Hormuz scenario within one quarter, before the transmission surfaces further in credit and consumer prices. The two watch signals that override everything else are the next Hormuz incident and the July 31 ban-expiry decision.

APPENDIX: SOURCE BASE

Consistent with clean-delivery discipline, attribution is held out of the body. The judgments above draw on the following source base. Full citation links are available on request.

Primary reporting and data: Reuters, Bloomberg, S&P Global, Al Jazeera, CNBC, Straits Times, Kyiv Independent, and regional outlets.

Wider source base for the diversity pass: independent Russian outlets including Meduza, along with Russian business press, state wires, and pro-Kremlin commentary read against the grain; Ukrainian official and independent outlets including Ukrainska Pravda and satellite-referencing analysts; Iranian state media and Gulf outlets including Gulf News and Khaleej Times; and commercial tanker-tracking and analytics providers including Kpler, Vortexa, LSEG, and independent tracking services.

Institutional and analytic sources: International Energy Agency Oil Market Report (June 2026), Institute for the Study of War, IMF World Economic Outlook (April 2026) and July briefing, IATA Global Outlook (June 2026), Wood Mackenzie closure modeling, KSE Institute and CREA Russian oil tracking, BloombergNEF and EIA capacity data, Carnegie (Vakulenko) refinery analysis, and EU sanctions reporting.

Source-handling note. Where capacity-offline estimates diverged, this assessment weighted methodologically conservative sources above interested-party claims, and states the disputed range plainly rather than resolving it artificially. Estimative language follows the ICD-203 standard scale. Likelihood and confidence are carried as separate axes throughout.