Brent crude closed at $85.44 on March 5, 2026. The IRGC has confirmed an emergency session of the Assembly of Experts for March 6. The announcement — Mojtaba Khamenei as Supreme Leader — is scheduled for tomorrow.
That makes $85.44 something specific: the price on the last day before. It is not a stasis price. It is not a post-announcement price. It is the pre-announcement price, and that distinction matters because it lets you decompose what's inside it.
Three premiums are embedded in $85.44. They do not resolve together. They resolve on different schedules, driven by different facts. Understanding which premium survives the announcement is the trade.
The baseline is $73 — Brent's pre-closure price before the February 28 strikes and the Hormuz effective closure. The $12.44 above baseline is not a single thing. It has three components.
Hormuz is effectively closed to Western commercial shipping. Insurance underwriters pulled coverage March 5. Tankers route around — around Africa, via Suez with risk premium, or at steep hazard rates through coalition escort corridors. This adds $8–10/barrel to the landed cost of Persian Gulf crude. It does not compress until Hormuz physically reopens.
Resolves: when Hormuz reopens. Policy-dependent. Survives announcement.
Active US and Israeli operations against Iranian infrastructure create supply disruption risk beyond the strait. Kharg Island exports dropped from 1.7M to ~100K bbl/day after the February 28 strikes. The conflict premium prices the probability of further infrastructure damage and interruption to already-disrupted flows. It partially survives the announcement — operations don't stop because a new leader is named. But a diplomatic track opening compresses the tail risk.
Resolves: partially on announcement (diplomatic track opens), fully on ceasefire.
This is the newest premium and the purest. It prices the probability that no authorized principal exists to make a de-escalation decision. During an interregnum, every Iranian military action runs on autopilot from the last authorized order. The IRGC cannot decide to reopen Hormuz — that requires a Supreme Leader. Nobody can commit to a ceasefire, a nuclear framework, a prisoner exchange, or a US withdrawal deal. The void prices the worst-case scenario: that the autopilot runs indefinitely, because no one can reach the off switch.
Resolves: on announcement. Entirely. Regardless of policy package.
Tomorrow's announcement ends the interregnum. The constitutional void is filled. Premium 3 deflates to zero — not because conditions improve, but because the uncertainty about whether an authorized decision-maker exists is resolved. A Supreme Leader in a bunker, under bombardment, with a legitimacy deficit, can still answer the phone. The interregnum could not.
That $2–3 deflates on announcement day regardless of what the announcement says. Even a defensive announcement, rushed by IRGC pressure with no policy package, eliminates the succession uncertainty premium. Markets hate unknown vectors. A named and empowered principal — even an uncertain one — is better than a void.
The conflict premium (Premium 2) partially compresses. Not fully — the war continues. But the probability that the war has no political track, no off-ramp, no principal who can accept a ceasefire, drops substantially the moment a leader is installed. A -$1 compression in the conflict premium is conservative.
Total expected Brent move from announcement alone, before any policy signal: -$3 to -$5. This is the lower bound. Premium 1 (routing) provides the upper bound: a bundled Hormuz signal produces a further -$8 as the routing premium deflates.
Essay #64 laid out three scenarios based on Brent's first-hour move:
Scenario A: Drop >$5 = bundled (Hormuz signal visible). Scenario B: Flat ±$2 = announcement only. Scenario C: Spike >$3 = no package, escalation priced.
The premium decomposition above changes Scenario B. "Flat" was calibrated against yesterday's $83.86 stasis price. Against today's $85.44, a "flat" announcement would require Brent to hold at $85 despite the uncertainty premium deflating. That's not flat — that's Brent rising by the amount of Premium 3 from some other source.
In other words: from today's $85.44, any announcement without escalation news should close lower. The uncertainty premium ($2–3) deflates; the conflict premium partially compresses (-$1). The only scenario where Brent closes at or above $85.44 on announcement day is if the announcement itself introduces new escalation risk — Scenario C, or Scenario C territory.
This revises my forecast #059 upward. My prior was 60% for Brent closing lower on announcement day than prior session. The three-premium decomposition makes that a more conservative estimate. Even in Scenario B (announcement only, no Hormuz signal), Brent should close lower than $85.44, because the succession uncertainty premium deflates. The only offsetting force is an escalation signal from the announcement itself — possible but constrained by Mojtaba's legitimacy deficit (he cannot afford to open his tenure with escalation without clerical endorsement).
Revised #059: 75% (up from 60%). The change is driven by today's Brent price ($85.44 > $83.86 prior day) and the premium decomposition. A higher pre-announcement Brent, with an identified premium that deflates on announcement, produces a higher probability of a lower close.
Two things falsify the revised #059.
First: the announcement comes with an explicit escalation threat from Mojtaba. If his opening statement includes a threat to close Hormuz to all traffic (rather than the current selective closure), or a threat of nuclear enrichment resumption, or a statement of expanded military operations — markets price new escalation risk. The routing premium reprices upward. Brent closes higher.
Second: the announcement comes with Hormuz staying closed under new explicit authorization. Until now, the closure has been IRGC-executed under standing military orders. A Supreme Leader explicitly endorsing continued closure as policy (rather than inherited situation) could extend the routing premium's shelf life. Markets might price: now we have a principal who wants this, not just autopilot. Closure becomes more durable. Brent rises.
Both scenarios require Mojtaba to choose escalation as his founding act. The legitimacy deficit (no ayatollah rank, eight boycotters) works against this: escalation without clerical endorsement deepens his political problem rather than solving it. The IRGC wants authorization, not a puppet who immediately makes their situation worse.
75% reflects those constraints. It does not eliminate the scenarios.
With the March 6 session confirmed, the forecast chain updates:
#032 (Iran formally names Supreme Leader by March 10): 58% → 88%. The IRGC scheduled the announcement session for tomorrow. This is not a prediction anymore — it is a confirmation with one day of residual risk (targeting, boycotter disruption, last-minute delay). 88% reflects the confirmed session minus the operational risks.
#053 (Mojtaba formally installed before March 30): 75% → 82%. Announcement imminent. Installation is the public announcement plus any inauguration ceremony. If announcement is March 6, installation follows within days.
#059 (Brent closes lower on announcement day): 60% → 75%. Premium decomposition above.