Skip to content
Welcome, thoughtbot's Giant Robots listeners!Start here
Autonomous Systems: Land & Sea
24JUN

US lets Iranian oil fund Iran's war

4 min read
16:13UTC

The US is at war with Iran and deliberately allowing Iranian tankers through the strait it describes as a kill box — because blocking them would break the oil market.

TechnologyDeveloping
Key takeaway

Washington has an implicit oil price ceiling that overrides maximum economic pressure on Iran.

Treasury Secretary Scott Bessent told CNBC on Monday that the United States is deliberately allowing Iranian oil tankers through the strait of Hormuz. "The Iranian ships have been getting out already, and we've let that happen to supply the rest of the world," he said⁠1.

The US is spending roughly $1.4 billion per day on military operations against Iran. It has described Hormuz as a "kill box" with pre-registered Iranian fire zones. Every ally it asked to send warships has refused. And through the same waters, Iranian crude continues to flow — the revenue that funds the missiles, drones, and naval mines the US and its partners are absorbing daily.

The logic is economic. Gulf oil exports have dropped at least 60% since February. Brent traded at $106.18 on Monday — up from $67.41 on 27 February. Saudi spare capacity faces daily drone attack. The Shah Gas Field is offline. Fujairah oil loading is suspended. Iran exports roughly 1.3 million barrels per day. Interdicting that flow would tighten a market already producing below demand by the widest margin the IEA has recorded. The administration has calculated that the inflationary cost of blocking Iranian exports exceeds the strategic cost of letting Tehran fund its defence.

Bessent predicted prices would fall "much lower" than $80 after the war⁠2. He named no timeline. Ten days earlier, he told Sky News escorts would begin "as soon as militarily possible" while Energy Secretary Wright said the Navy was "simply not ready" for them. TankerTrackers.com data showed 11.7 million barrels of Iranian oil had already transited to China by 10 March. Washington's non-interdiction policy means that figure is still climbing. The distance between stated war aims — destroying Iran's military capability — and operational reality — permitting the adversary's primary revenue stream — is the war's defining economic contradiction.

Deep Analysis

In plain English

The US is at war with Iran — conducting air strikes and military operations — but the US Treasury Secretary admitted on live television that American forces are letting Iranian oil tankers sail through the strait of Hormuz freely. The reason is economic: Iran produces roughly 1.5 million barrels of oil per day. If the US stopped all of that oil reaching world markets on top of the 60% Gulf supply reduction already caused by the war, oil prices would likely surge well beyond $106, potentially triggering a global recession. So Washington has made a calculated trade-off: allow Iran to keep funding its own war effort in exchange for preventing an oil price spiral damaging to American consumers and allied economies. The problem is that this trade-off has now been said out loud on television — which weakens America's ability to credibly threaten Iran with economic isolation in this conflict or any future one.

Deep Analysis
Synthesis

Bessent's statement is the first explicit official acknowledgement that US economic warfare against Iran is partial by design, not merely by enforcement failure. This fundamentally degrades the credibility of the US sanctions regime. Any state observing this conflict will understand that US financial sanctions carry an implicit market-stability escape valve — a conclusion that weakens deterrence in future confrontations with any oil-producing adversary.

Root Causes

The US Strategic Petroleum Reserve holds approximately 350–400 million barrels — insufficient to offset a full Iranian export cutoff of approximately 1.5–2 million barrels per day for more than six to nine months without exhausting emergency reserves. No allied producer holds spare capacity capable of simultaneously replacing both Gulf disruption and Iranian exports. Washington has therefore calculated that enforcing full economic warfare on Iran is financially impossible without triggering a domestic energy crisis it cannot absorb politically.

Escalation

The primary escalation risk is domestic political rather than military. If the US Congress or influential media frame Bessent's admission as 'funding the enemy', the administration may face irresistible pressure to reverse course and stop Iranian exports. A forced policy reversal would immediately remove the only material buffer currently softening global oil prices — producing an acute price spike that itself carries geopolitical escalation potential across energy-importing economies.

What could happen next?
  • Meaning

    The US has an implicit oil price ceiling above which it modifies its own war aims and enforcement posture.

    Immediate · Assessed
  • Consequence

    Iran retains significant oil revenue to fund its defence despite sustained US kinetic strikes on Iranian territory.

    Short term · Assessed
  • Risk

    Congressional backlash framing Iranian oil tolerance as 'funding the enemy' could force a policy reversal and trigger an acute oil price spike.

    Short term · Suggested
  • Precedent

    US economic warfare against oil-producing adversaries now has a documented market-stability override, weakening future sanctions deterrence credibility.

    Long term · Assessed
First Reported In

Update #38 · Israel enters Lebanon; Hormuz pact fails

CNBC Bessent· 17 Mar 2026
Read original →
Causes and effects
Different Perspectives
EDGE Group
EDGE Group
EDGE took control of Italian engine maker CMD in October and signed exploratory USV memorandums with Novamarine and Abu Dhabi Ship Building in early November. It is assembling an Italian hull and engine supply chain around Emirati autonomy, with no customer named.
Japan Ministry of Defense
Japan Ministry of Defense
Nikkei reported on 29 October that the ministry will start research in fiscal 2027 towards mass-producing underwater drones for detection and attack, with prototypes by fiscal 2035. The stated aim is to deter China's growing submarine fleet with fewer sailors at risk.
Kongsberg Discovery
Kongsberg Discovery
Kongsberg received a $54m DIU modification, mainly for AUV deliveries, and Camilla Kiss said the unit has signed 1.7bn Norwegian kroner of AUV contracts in 2026. The Norwegian maker sells into the US market as an established production line.
Elbit Systems
Elbit Systems
Elbit bought ISE of Vancouver, maker of more than 250 AUVs, on 20 October for a price it called not material. The Israeli group adds an underwater vehicle line to its naval business.
Defense Acquisition Program Administration
Defense Acquisition Program Administration
DAPA's 179th committee cleared a 591bn won mine-warfare USV programme on 6 November, alongside the Jangbogo-N nuclear submarine. HD Hyundai's Long Beach trial with Anduril shows Korean industry pitching hulls abroad while Seoul funds its own.
Finland National Emergency Supply Agency
Finland National Emergency Supply Agency
NESA opened an €11m competition on 4 November for radiation-sensing drones and ground robots, including quadrupeds, for the EU's rescEU stockpile. It is a civil-protection buyer using open tender, with a decision expected in March 2027.

Written with AI from Lowdown's published reporting. Not individually reviewed by an editor. Editorial standards.