The number the market didn't want
Brent crude held near $102.64 Thursday, WTI at $93.67, as traders absorbed a timeline nobody on the sell side had been working with: the Pentagon's own planners see a Hormuz mine sweep potentially stretching half a year.
The number leaked out of Tuesday's classified House Armed Services briefing, where a senior Defense official walked the committee through the Navy's working assumptions. The Washington Post broke the story. Per the leak, Iranian forces may have dropped upwards of twenty devices into and near the waterway, with a meaningful portion of them anchored via GPS in ways that defeat a standard sweep pattern.
A six-month window, if it holds, would put the re-opening of the strait into mid-October. Most street forecasts assume a deal by late Q2.
Pentagon walks it back, publicly
Within hours, Pentagon chief spokesperson Sean Parnell tried to kill the story. He said the leak "cherry-picks" fragments from a classified session and called a six-month closure of Hormuz "an impossibility and completely unacceptable." The denial did not dispute that the number was discussed, only that it represented policy.
For oil desks, the distinction is cosmetic. A scenario floated in a classified briefing to the HASC is a real planning input, whether or not the White House wants to own it in daylight.
Why six months is not crazy
History is a warning. Coalition navies needed more than two years after the 1990-91 Gulf War to work the northern half of the Persian Gulf back to safe-transit status, an operation that pulled hundreds of devices out of the water before underwriters would resume coverage. The current count in Hormuz is smaller, but the mix is harder: GPS-tethered mines can reposition, decoy sonar, and sit quiet until a keel passes.
It also matters where the mines are. Insurers are not going to unfreeze Hormuz rates on the basis of a sweep that covers 80 percent of the channel and leaves the rest. Partial confidence does not exist in this market.
Trump triples the sweepers
Trump responded Wednesday by ordering a threefold increase in the US minesweeping effort in and around the strait. The fleet was small to begin with. The Navy's dedicated Avenger-class wooden-hulled sweepers number in single digits in forward-deployed service, so a triple is an absolute surge from a low base, not the mass effort the headline implies.
The order fits the pattern of this crisis: each new piece of bad news gets a public escalation from the White House. Markets are learning to price both signals at once. Prices ticked higher earlier Thursday as Iran announced its first toll revenue and US forces boarded another tanker.
What the duration trade means now
- If six months is real: Brent camps in the $100-$115 band through the summer driving season and US refiners keep running product exports near record pace
- If talks unlock a partial reopening by late Q2: $85-$95 is back in the conversation, and the crack-spread trade unwinds
- Either way, the mine problem outlives the war: once the shooting stops, the sweep still has to happen before insurers resume Gulf coverage
This is the same market that jumped to $102 Tuesday after Iran seized another two ships. The Pentagon leak just widened the forecast range again.
Calendar risk
- May 1: Exxon reports Q1, first full window into how the majors are banking the war premium
- Mid-May: OPEC Monthly Oil Market Report
- Unscheduled: next US-Iran talks, no confirmed date since Islamabad broke down earlier this month
The tape is going to keep trading each headline as a signal. Duration risk is no longer an abstraction.