A National Security Intelligence Assessment
For decades American planners have treated the Strait of Hormuz as a military problem. Today it is something far more complicated: a global strategic lever.
The narrow maritime choke point between Iran and Oman—barely 21 miles across, with shipping lanes only about two miles wide in each direction—carries roughly one-fifth of the world’s oil supply in peacetime. That simple geographic fact has always given Tehran a latent advantage.
But the current war has turned that latent leverage into active market disrupting power.
Recent intelligence reporting now indicates what many regional analysts have long suspected: Iran is unlikely to fully close the strait. Instead, Tehran appears to be executing a more sophisticated strategy—partial throttling.
Partial Throttling: That distinction matters enormously.
Closing the strait outright would provoke a full-scale military response by the United States and its allies. But making the waterway intermittently dangerous, uninsurable, and unpredictable achieves Tehran’s strategic goal without triggering a decisive American intervention.
In other words, Iran does not need to shut the door.
It only needs to jam the lock
The Persian Logic of Leverage
Iranian strategy has always been deeply shaped by thousands of years of history—and justifiable Persian pride.
Iranian leaders see themselves not as a rogue regional actor but as the inheritors of a civilization that predates Rome. The humiliation narrative that runs through modern Iranian politics—from the 1953 CIA-backed coup to the Iran-Iraq War—creates a powerful domestic expectation: Iran must never appear to yield under pressure.
In that cultural context, control of the Strait of Hormuz has become more than a tactical instrument.
It is symbolic sovereignty.
By demonstrating that it can threaten the artery through which Gulf oil flows to global markets, Tehran signals that even under military pressure it retains the power to impose costs on the world’s largest economies.
As Ali Vaez of the International Crisis Group bluntly summarized in recent reporting, Iran’s ability to disrupt the strait may now be “more potent than even a nuclear weapon” as a strategic bargaining tool.
That statement captures the core dynamic now shaping the war.
Iran cannot defeat the United States militarily.
But it can weaponize global energy markets.
The Mechanics of Disruption
The Islamic Revolutionary Guard Corps (IRGC) has spent decades preparing for exactly this moment.
Iran’s doctrine in the strait relies not on controlling the sea outright but on making it too dangerous to use normally. The tactics are familiar:
Naval mines seeded in shipping channels
Fast attack boats harassing tankers
Drone strikes against commercial vessels
Anti-ship missiles fired from concealed coastal batteries
Insurance risk manipulation through unpredictable attacks
Crucially, none of these actions require sustained naval superiority.
Even a single drone strike or mine incident can cause insurers to withdraw coverage, effectively shutting down traffic. As analysts note, “all it takes to disrupt traffic and deter vessels is one or two drones.”
That asymmetry explains why traffic through the strait has collapsed from roughly 120 daily transits in peacetime to a small fraction of that number today.
The result is exactly what Tehran wants:
Energy prices spike. Shipping companies hesitate. Political pressure mounts in Washington.
American Power — and Its Limits
Militarily, the United States still dominates the region.
The U.S. Navy can clear mines, escort tankers, and strike Iranian coastal infrastructure. Washington has demonstrated those capabilities before, most notably during the 1987–1988 “Tanker War” and Operation Earnest Will, and its lethal covert component - Operation Prime Chance.
But reopening the strait by force is not a one-time action.
It is an ongoing campaign.
Even if U.S. forces seize coastal positions or destroy Iranian naval units, the IRGC retains the ability to launch drones, missiles, and sabotage operations from deep within Iranian territory.
In practical terms, that means reopening the strait would likely require a prolonged suppression campaign inside Iran—a far larger escalation than many policymakers appear to acknowledge.
This is why intelligence assessments now warn that the war could actually increase Iran’s regional leverage, not reduce it.
The longer the crisis persists, the more Tehran proves its point:
Iran cannot be ignored.
The Insurance War
The real battlefield in the Strait of Hormuz is not naval.
It is financial.
Global shipping depends on insurance underwriting through markets like Lloyd’s of London. If insurers refuse to cover vessels passing through the strait, tankers simply stop sailing.
That dynamic allows Tehran to disrupt global oil flows without physically blocking the waterway.
Already, some ships that have crossed the strait have done so through Iran-approved routes, a system shipping journals have begun calling the “Tehran Toll Booth.”
That development hints at Iran’s long-term objective:
Not closure.
Control.
If Tehran can normalize a system in which vessels require Iranian approval—or even pay passage fees—to transit Hormuz, the geopolitical implications will be profound.
China, Quietly in the Background
One other player looms large in the background: China.
Shipping data suggests that most tankers carrying Iranian oil are now bound for China, with vessels broadcasting “Chinese crew” or “Chinese owner” on their transponders to avoid attack.
Beijing’s position is delicate.
China is the world’s largest importer of Gulf energy and therefore highly vulnerable to disruption. But it is also Iran’s largest oil customer and a key diplomatic partner.
The quiet reality is that China may be the only power with enough economic influence over Tehran to moderate the crisis.
Whether Beijing chooses to use that influence is another question.
The Negotiation Battlefield
The Strait of Hormuz has therefore become something unusual in modern warfare:
A negotiating platform disguised as a battlefield.
Iran’s objective appears straightforward:
Maintain partial disruption of the strait
Drive global energy prices upward
Increase political pressure on Washington
Trade restored maritime stability for security guarantees and economic concessions
Former CIA Director William Burns recently summarized the likely outcome of this strategy: Tehran will seek long-term deterrence and economic benefits in any eventual settlement.
Put bluntly:
Iran wants the world to understand that Hormuz is its bargaining chip.
The Bottom Line
At this stage of the war, the strategic balance in the Strait of Hormuz is paradoxical.
The United States holds overwhelming military superiority.
Iran holds geographic leverage.
And geography, in this case, is proving remarkably powerful.
Persian strategy is not about defeating the United States on the battlefield. It is about forcing Washington to confront a difficult reality:
The global economy runs through a narrow corridor of water that Iran can threaten at any time.
So long as that fact remains true, Tehran retains what it needs most in this war.
Not victory.