Pentagon officials told the US House Armed Services Committee that mine-clearing operations in the Strait of Hormuz could take up to six months to complete, according to defense.gov — a timeline that, if it holds, would keep one of the world's most critical energy chokepoints functionally impaired well into late 2026.

The Strait is the transit point for roughly 20–21% of global oil consumption and a substantial share of LNG flows, primarily bound for East Asia. Ship traffic through the waterway has dropped sharply despite diplomatic activity on multiple fronts, per Reuters. With mine-clearance operations now confirmed as the binding constraint on any return to normal operations, the disruption is no longer a question of political will — it is an engineering problem with a fixed, multi-month horizon.

The Operational Picture

Mine-clearing in confined, high-traffic straits is slow by nature. It requires a combination of sonar survey vessels, remotely operated vehicles, and in some cases, trained divers — all operating under heightened threat conditions. The geometry of the Strait compounds the difficulty: at its narrowest point it is roughly 33 kilometres wide, but usable shipping lanes are far narrower, and the shallow, turbid waters of the Persian Gulf degrade sonar performance. Six months is not a conservative estimate dressed up as prudence. It reflects real operational constraints.

The International Chamber of Commerce's Commercial Crime Services has recorded maritime piracy and armed robbery incidents in the broader region alongside the primary disruption — an overlapping risk layer that further complicates vessel routing and insurance underwriting. War risk premia on hull and cargo coverage for Persian Gulf transits have spiked; at the extreme, some underwriters have suspended cover entirely for certain vessel classes on certain routes.

The US State Department confirmed that Washington has taken active measures in response to Iranian activities affecting the Strait, though the nature and scope of those actions remain incompletely disclosed. Separately, Reuters reported that Beijing has stated it will protect Chinese ships and crews transiting the waterway. That declaration carries weight: China is the single largest buyer of Gulf crude, and Chinese-flagged or Chinese-crewed VLCCs represent a meaningful share of Hormuz traffic. Whether Beijing's protective posture means naval escorts, diplomatic assurances, or something else has not been made explicit.

What the Timeline Means for Markets

A six-month impairment window is long enough to matter structurally, not just as a short-term volatility event. Spot crude markets have been pricing in supply disruption risk, but the forward curve's reaction is where the real signal sits. Sustained backwardation in Brent — where near-term contracts trade at a premium to deferred ones — would indicate physical tightness rather than paper positioning. LNG spot prices in Northeast Asia face similar pressure: contracted volumes that would ordinarily move through Hormuz have no costless alternative routing. Diverting around the Cape of Good Hope adds roughly 15–20 days of transit time per voyage, which absorbs vessel capacity and amplifies shipping rates across the tanker fleet.

For sovereign energy importers in South Korea, Japan, and India — all heavily exposed to Gulf crude — the duration of disruption is the critical variable. Short outages can be bridged with strategic petroleum reserves; six months cannot. India, which has significantly expanded its Gulf crude import dependency over the past decade, faces the sharpest near-term import bill exposure.

Refining margins in Asia are being squeezed from both sides: feedstock costs up, product demand under pressure from macro softness in China. European refiners benefit marginally from crude displacement into Atlantic Basin markets, but not enough to offset broader energy cost pass-through into industrial inputs.

The picture is genuinely fluid. The six-month estimate from Pentagon officials is a planning horizon, not a commitment, and diplomatic channels between Washington, Tehran, and Beijing remain active. But the combination of mine-clearing constraints, elevated piracy risk, and competing great-power naval presences in the same narrow waterway is not a situation that resolves quickly or cleanly. Markets pricing a swift normalization are making a bet the operational facts do not currently support.