5MAR

Tanker struck at Iraq's Khor al-Zubair

3 min read

15:17UTC

A boat struck an oil tanker at Khor al-Zubair in Basra — Iraq's primary southern crude export channel — as the country bleeds 1.5 million barrels per day of lost output with no route to market.

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ConflictDeveloping

Key takeaway

A boat strike inside Iraqi territorial waters confirms Iran-aligned proxies have activated pre-positioned maritime sabotage capabilities, opening a third attack vector that requires fundamentally different defensive countermeasures than missile and drone interception.

A boat struck an oil tanker at Khor al-Zubair port in Iraq's Basra governorate. No casualties or damage assessment has been released. Iraqi authorities have not attributed the incident.

The method — a vessel deliberately striking a tanker inside a port — echoes tactics employed across the region during this conflict and in previous years by Iranian-backed groups and Houthi forces in the Red Sea, including explosive-laden boats used against commercial shipping. Whether this was a waterborne explosive device, a guided ramming, or something else entirely has not been established. The ambiguity itself is disruptive: insurers and port operators do not need a confirmed attribution to price the risk.

Khor al-Zubair sits on the Khor Abdullah waterway, Iraq's primary deepwater channel for southern crude exports. Iraq has already lost approximately 1.5 million barrels per day of output — unable to move crude through Gulf shipping routes that have effectively shut down since the P&I insurance withdrawal took effect. Iran's strikes on the Fujairah pipeline bypass in the UAE and repeated attacks on Duqm Port in Oman have systematically degraded every alternative to Hormuz-dependent export routes. An incident at Khor al-Zubair threatens what remains of Iraq's own export infrastructure.

Iraq is OPEC's second-largest producer. The 1.5 million barrel daily reduction compounds supply losses already inflicted by the Ras Laffan and Ras Tanura shutdowns, with Brent Crude at $83.75 per barrel after five consecutive sessions of gains. The geography of disruption now runs from the strait of Hormuz through the UAE's eastern coast, Oman's southern shore, and into Iraqi territorial waters — a perimeter that leaves no Gulf energy exporter untouched.

Deep Analysis

In plain English

Khor al-Zubair is a port channel near Basra in southern Iraq where oil tankers load refined fuel and gas for export. A boat was used to strike a tanker — likely a small vessel packed with explosives, the same method Houthi rebels have used against Saudi ships. This is significantly harder to defend against than missiles or drones because it requires patrolling waterways rather than scanning the sky, and the warning time is measured in seconds rather than minutes. Because the attack occurred inside Iraqi territorial waters, it almost certainly involved local Iran-backed militias rather than the Iranian military directly — groups that have been quietly developing these capabilities for years with IRGC support.

Deep Analysis

Synthesis

Three distinct attack modalities — ballistic missiles and drones from the IRGC directly, and maritime WBIED from PMF proxies — are now converging on Iraqi territory simultaneously. This multi-domain convergence suggests a coordinated if not centrally commanded campaign designed to saturate Iraqi and US defensive capacity across domains that require completely different intercept systems, none of which Iraq currently possesses in sufficient depth.

Root Causes

Kataib Hezbollah and affiliated PMF factions have developed waterborne IED and maritime sabotage capabilities with IRGC Naval support since at least 2018, specifically designed to threaten Basra's oil infrastructure as coercive leverage against Baghdad and Washington. These capabilities were pre-positioned as a strategic hedge and have now been activated as part of a broader multi-domain pressure campaign rather than as an improvised response to the current conflict.

Escalation

The Khor al-Zubair attack combined with the 1.5mb/d Iraqi output cut already reported represents a convergence of land and maritime pressure on Iraq's export infrastructure. If attacks extend to Iraq's offshore crude terminals (ABOT and KAAOT), which handle the bulk of Iraq's 3.4mb/d production, a near-total collapse of Iraqi export capacity becomes a realistic near-term scenario — removing OPEC's second-largest producer from the market entirely.

What could happen next?

Meaning
Maritime attack capability activated within Iraqi territorial waters confirms Iran-aligned proxies possess a pre-positioned naval sabotage capacity that does not require direct Iranian military involvement.
Immediate · Assessed
Consequence
War-risk insurance premiums for tankers calling at Khor al-Zubair will spike immediately, potentially halting commercial refined product and LPG traffic regardless of physical damage extent.
Immediate · Assessed
Risk
Escalation to Iraq's offshore crude terminals (ABOT and KAAOT) would effectively remove OPEC's second-largest producer's remaining export capacity, a supply shock qualitatively beyond any single Gulf state disruption recorded so far.
Short term · Suggested
Precedent
Proxy maritime operations in Iraqi territorial waters normalise a new attack surface that persists beyond any ceasefire as long as pre-positioned militia maritime capabilities remain intact and unaddressed.
Long term · Suggested

Source Landscape

This story draws on centre-left-leaning sources from Qatar

Qatar

Waterborne IED attacks on oil tankers in Gulf waterways recall Iran's May 2019 limpet mine attacks on Japanese and Norwegian tankers in The Gulf of Oman and Houthi WBIED operations against Saudi vessels in 2018–19.

More directly, Khor al-Zubair and the Shatt al-Arab waterway were targeted repeatedly during the 1980s Iran-Iraq War, when both sides struck oil infrastructure and tankers in precisely this geographic corridor — establishing a targeting playbook Iran-aligned actors have now reactivated.

Why it’s relevant now

The 1980s Shatt al-Arab attacks are directly applicable: Iran-aligned actors possess an established historical and operational template for waterway attacks in this specific geography, targeting identical infrastructure. The current attack represents reactivation of a dormant capability rather than an improvised innovation.

Khor al-Zubair handles approximately 300,000–400,000 b/d of Iraqi refined product and LPG exports — a distinct stream from the offshore crude terminals.

A sustained maritime threat to this channel would affect LPG supply to South Asia and East Africa, which depend on Iraqi exports, and would spike war-risk insurance premiums for Basra-calling vessels immediately, potentially making commercial traffic economically unviable before any physical closure of the channel occurs.

CSIS maritime security analysts have specifically identified Khor al-Zubair as a high-vulnerability export chokepoint: the channel's narrow width, high tanker traffic density, and proximity to shore-based militia positions make it nearly impossible to defend without sustained naval presence that neither Iraq nor the US currently maintains there.

The US Naval Institute has documented Iranian proxy maritime capability development in southern Iraq as a deliberate hedge against Hormuz closure — if Hormuz is already contested, Basra waterway attacks serve to close the only remaining Iraqi export alternative simultaneously.

Sources:Al Jazeera

Mentions:VLCC →Oman →Ras Tanura →Ras Laffan Industrial City →Fujairah →Red Sea →Brent Crude →Basra →Khor al-Zubair →Iran →United Arab Emirates (UAE) →Strait of Hormuz →Duqm →Iran-Iraq War →Kataib Hezbollah →Gulf of Oman →East Africa →

First Reported In

Update #22 · IRGC drones hit Azerbaijan; CIA link cut

Al Jazeera· 5 Mar 2026

Read original →

Different Perspectives

Russia

Russia vetoed the same renewal on 17 September, arguing that Britain, France and Germany never validly triggered the snapback that reimposed the pre-2015 UN resolutions. No panel was ever seated under that mandate, so the UN list decays fastest for states that screen against it rather than against the American one.

China

China vetoed renewal of the UN sanctions monitoring mandate on 17 September, arguing that Resolution 2231 terminated on 18 October 2025 and that the Security Council should drop Iran's nuclear file altogether. On that reading there is nothing to monitor, so the sanctions survive and their enforcement does not.

Iraq

Baghdad saw the last American counter-Islamic State troops leave its territory on 30 September, completing a timetable it agreed with Washington in September 2024. Iraqi airspace deconfliction passes to Baghdad, which still has an open inquiry into the Maysan drone launches that has named nobody.

Pakistan

Treasury names Waseem Pasha Tajammal of Rawalpindi as the Cavalier group's chairman and places one of the designated incorporations in Islamabad. QatarEnergy separately told Pakistan that liquefied natural gas cargo cancellations would run through November, so Islamabad carries an enforcement question and a supply gap at once.

Turkey

Treasury named a Cavalier Dynamics company incorporated in Istanbul among the ten nodes it designated on 29 September, and Ankara has published no response. Turkey imported a record 120,000 barrels a day of Indian diesel in August, cutting Russia's share of its diesel imports to 20 per cent.

India

Suraj Yadav, a wiper from Uttar Pradesh, was killed aboard the Cape Dao on 23 September, and 19 of the ship's 20 Indian crew were taken off alive. India's September imports ran at 575,000 barrels a day from Iraq and 566,000 from Saudi Arabia, back to pre-conflict rates.