Saudi Aramco’s Exports Hold, but War-Risk Costs Tell a Darker Story

Yemen’s Houthi movement declared a maritime embargo on Saudi-linked shipping on 20 July 2026, and has since claimed missile and drone strikes on at least two Saudi oil tankers. Saudi Aramco is still delivering crude to international buyers. The question is what that continuity is costing, and how long the calculus holds.

The combination of active Houthi attacks on Red Sea and Bab el-Mandeb shipping lanes and the constraints on Strait of Hormuz transit created by US-Iran military escalation has placed Saudi Arabia’s crude export infrastructure under simultaneous pressure from two directions. The East-West pipeline (Petroline) is now the operational spine of Aramco’s export continuity strategy.

EIA chokepoint analysis published in March 2026 quantified the scale of the exposure, placing average Hormuz throughput at 20.9 million barrels per day and Bab el-Mandeb at 4.2 million barrels per day in the first half of 2025, figures that underscore why simultaneous pressure on both corridors represents a qualitatively different supply risk than disruption to either route alone.

What follows examines how Aramco is keeping barrels moving, what the security environment is doing to shipping costs and war-risk insurance, how reliably buyers can count on Gulf crude, and what energy investors should be monitoring as the situation evolves through late 2026.

A two-front threat: what Houthis and US-Iran tensions are doing to Saudi export corridors

The Houthi maritime embargo, announced around 20 July 2026, explicitly bans vessels that load or discharge at Saudi ports and warns them to avoid Saudi waters. Since the declaration, Houthi forces have claimed strikes on two named Saudi oil tankers:

• Missile and drone strikes claimed on the tanker Encelia
• A separate claimed strike on the tanker Layla
• Lethal attacks on other commercial vessels transiting the Bab el-Mandeb strait
• Shipping data confirming traffic decline through Bab el-Mandeb following Houthi attacks on Saudi energy facilities at Jizan and Yanbu

The US Navy’s maritime information centres characterise the current threat to ships in the southern Red Sea as “moderate,” with preparations for further Houthi attacks ongoing even as commercial traffic continues.

The US Navy characterises the threat to commercial shipping in the southern Red Sea as “moderate,” a designation that acknowledges continued attack preparations even as tanker traffic persists along established lanes.

A US maritime advisory covering the Red Sea, Bab el-Mandeb, Gulf of Aden, and adjacent waters remains in force through late September 2026.

The Hormuz dimension: US-Iran escalation and overland pressure

The Red Sea threat does not operate in isolation. Prior military escalation linked to US-Iran tensions has periodically constrained transit through the Strait of Hormuz, forcing Gulf producers to lean more heavily on overland bypass routes. For Aramco, this means the two primary maritime corridors for crude exports, Hormuz to the east and Bab el-Mandeb to the west, face simultaneous pressure. That is a qualitatively different problem from either threat alone, and it explains why the East-West pipeline has become the centrepiece of Saudi Arabia’s export architecture.

The dual chokepoint pressure now acting on Gulf crude exports represents a structurally different challenge from the episodic single-corridor disruptions that characterised previous Houthi campaign phases, because routing alternatives that bypass one constraint often feed directly into the other.

Inside the East-West pipeline: Aramco’s primary defence against export disruption

Saudi Arabia’s primary tool for maintaining exports under these conditions is the East-West crude pipeline (Petroline), running from the Eastern Province to Yanbu on the Red Sea coast. The pipeline’s total design capacity stands at approximately 7 million barrels per day, a level reached after post-2019 expansion specifically designed to add redundancy against wartime scenarios.

Of that total, roughly 5 million b/d is available for export via Yanbu, with the remainder supplying refineries on Saudi Arabia’s west coast. Yanbu’s two loading terminals (North and South) carry a combined nominal loading capacity of approximately 4.5 million b/d, the binding constraint on how much crude can actually be shifted from the Gulf coast to the Red Sea on any given day.

Industry estimates suggest over 70% of usual daily crude shipments have been redirected to Yanbu via the pipeline, though this figure has not been independently confirmed.

Damage, recovery, and what the 2019 Abqaiq lesson built

The pipeline suffered partial damage when one pumping station was struck, temporarily reducing throughput by approximately 700,000 b/d. Full capacity was restored by late March 2026, a timeline reconfirmed by the energy ministry in April.

The speed of recovery was not accidental. After the 2019 Abqaiq incident, Aramco expanded the East-West system from 5 million b/d to 7 million b/d design capacity using parallel lines, an investment explicitly intended to improve redundancy under high-risk conditions. That decision is now paying operational dividends.

What is the Red Sea doing to the price of a barrel?

War-risk insurance has become the primary financial transmission channel for Houthi and broader geopolitical risk into landed crude costs. The premium escalation since the embargo tells a clear story.

London market underwriters have widened the high-risk zone for the Red Sea, pushing war-risk premiums into that 1-2% range for exposed voyages. The cost increase is significant, but the more consequential development came in mid-August 2026.

Some insurers have moved beyond price increases to outright withdrawal of war-risk cover for vessels trading in the Red Sea, Gulf of Aden, and large parts of the western Indian Ocean. The geographic scope of these exclusions does not exempt Saudi Arabia’s Red Sea coast, directly affecting ships serving Yanbu.

For Aramco’s customers, the question of who absorbs these costs depends on contract structure. Buyers on freight-at-risk contracts (where freight and insurance obligations fall on the purchaser) face a direct increase in the landed cost of Saudi crude, regardless of the official selling price. Sellers on delivered terms absorb the hit to their own margins.

How the war-risk insurance market works and why it matters for oil supply

The premium numbers above carry more weight when the underlying mechanism is clear. War-risk insurance is a specialised London market product that covers damage to or loss of a vessel from conflict, terrorism, or military action. For commercial tankers transiting designated conflict zones, this coverage is not optional; it is a mandatory cost of doing business.

The mechanism works in sequence:

1. The Joint War Committee (operating through Lloyd’s of London) designates geographic zones as high-risk based on intelligence assessments and attack frequency.
2. When a zone designation is issued or expanded, underwriters review premium levels for all voyages transiting the affected area.
3. Premiums are set as a percentage of the vessel’s insured value, adjusted for the specific route, vessel type, and prevailing threat intelligence.
4. These costs flow through to cargo buyers depending on the freight terms of their crude purchase contracts.

The critical distinction for investors is between premium escalation and coverage withdrawal. When premiums rise, the route remains insurable but more expensive. When insurers withdraw cover entirely, as occurred in mid-August 2026 for parts of the southern Red Sea and Bab el-Mandeb, ships cannot obtain coverage at any price. The latter condition is structurally more disruptive because it can halt voyages regardless of willingness to pay.

Maritime security designations issued by the Joint War Committee carry legal and financial consequences that extend well beyond premium pricing, including lender restrictions on vessel finance, flag-state notifications, and P&I club coverage conditions that together determine whether a ship can lawfully transit a designated zone at any price.

CIF versus FOB: who pays when Red Sea risk premiums rise

Contract freight terms determine which party bears the insurance cost increase. Under CIF (Cost, Insurance, and Freight) contracts, the seller is responsible for insurance and delivery costs; the premium escalation compresses the seller’s margin. Under FOB (Free on Board) contracts, the buyer assumes responsibility once crude is loaded, meaning the insurance cost increase flows directly to the purchaser.

European refiners assessing Saudi Aramco and Iraq’s SOMO monthly official selling prices against available spot alternatives, a dynamic highlighted by Argus Media’s Crude Report, are increasingly factoring these logistics costs into procurement models. The official selling price alone no longer tells the full story of what a barrel of Gulf crude actually costs to land.

Are Saudi exports actually reliable right now?

The short answer on volume reliability is that Saudi crude exports have remained broadly stable despite the threat environment. Tankers continue to operate through the Red Sea alongside documented attack incidents. The East-West pipeline returned quickly to full capacity after pumping station damage.

Saudi export volumes reaching their highest level since 2023 in the period immediately before the Houthi embargo provides a useful baseline for assessing how much of the subsequent routing complexity reflects genuine volume suppression versus cost-only impact on flows that have continued at scale.

The longer answer requires distinguishing between two categories of risk:

Cumulative friction risks (higher probability):

• Repeated scheduling disruptions from attack alerts
• Rising insurance and freight costs with each escalation
• Narrowing of available routing options as coverage withdrawals spread
• Incremental operational burden on pipeline and terminal capacity

Catastrophic supply interruption risks (lower probability):

• Prolonged total cutoff of Saudi exports
• Simultaneous closure of both Hormuz and Red Sea corridors
• Sustained large-scale destruction of pipeline or terminal infrastructure

The UN and maritime security agencies describe the current attacks as adding stress and danger to global supply chains, but not yet achieving a sustained, large-scale interruption of oil flows.

The infrastructure redundancy Aramco built after the 2019 Abqaiq attack is the reason volume reliability has held. The post-incident expansion to 7 million b/d pipeline capacity was designed precisely for conditions like these. In practice, Saudi Arabia can route a significant fraction of its exports away from Hormuz and still reach global markets, even as some risk transfers to the Red Sea corridor.

The calibrated view: supply continuity can be assumed with reasonable confidence, but the cost of that continuity is rising in ways that do not appear temporary.

What buyers and investors should be watching through late 2026

Five indicators will tell energy investors whether the situation is improving, stabilising, or deteriorating:

1. War-risk insurance terms: Further premium increases above the current 1-2% range, or additional insurer withdrawals expanding the geographic scope of coverage exclusions, would signal a deteriorating risk environment.
2. Houthi targeting escalation: Successful strikes on large crude carriers or direct hits on Yanbu-related terminal assets would represent a qualitative escalation beyond current attack patterns.
3. Pipeline and terminal utilisation: If East-West pipeline throughput and Yanbu loading operations approach the 4.5 million b/d terminal ceiling consistently, Aramco’s routing flexibility narrows significantly.
4. Monthly official selling prices: Saudi Aramco OSPs and SOMO prices relative to spot benchmarks signal how much price concession sellers are offering to offset logistics risk for term buyers.
5. US-Iran diplomatic and military developments: Any shift in the US-Iran dynamic that eases or intensifies Hormuz and Red Sea tensions will directly affect the dual-corridor pressure on Saudi exports.

The slow diversification trend: how refiners are rewiring procurement at the margin

European and Asian refiners are not abandoning Gulf crude. The shifts are incremental, not abrupt. Refiners are increasing marginal exposure to Atlantic Basin and Americas-origin crude with lower logistics risk, building on the post-2022 restructuring away from Russian supply that has already reshaped procurement models.

This does not threaten Saudi export volumes in the near term. Gulf crude remains competitive on a pure barrel basis. The risk for Aramco is that if war-risk premiums and routing constraints persist as structural features rather than temporary spikes, the incremental diversification deepens over time, eroding term-contract loyalty at the margin.

For investors wanting to understand how procurement diversification is reshaping refinery economics on the demand side, our dedicated guide to refiner crude slate adjustments examines how US and European refiners are reweighting Atlantic Basin and Americas-origin crude to reduce dependence on high-logistics-cost Gulf supplies, including the infrastructure investments required to process different crude grades.

Saudi Aramco has kept the barrels moving. The cost of doing so is now the story.

Aramco has demonstrated meaningful operational resilience through infrastructure redundancy and rapid pipeline recovery. Volumes are flowing. The East-West pipeline is performing the role it was expanded to fill after 2019.

The shift that matters for investors is from volume risk to cost risk. War-risk insurance premiums have moved from 0.3% to 1-2% of vessel insured value. Some insurers have withdrawn cover entirely. Routing options have narrowed. Buyer diversification, while incremental, is building.

The situation is not in crisis. Saudi crude exports are not at risk of imminent collapse. But the trend in insurance premiums, buyer procurement behaviour, and routing constraints points toward a durably more complex and expensive export environment for Gulf crude through late 2026 and beyond.

This article is for informational purposes only and should not be considered financial advice. Investors should conduct their own research and consult with financial professionals before making investment decisions. Forward-looking assessments of geopolitical risk and shipping costs are subject to change based on military, diplomatic, and market developments.