Hormuz Strait Reopening Scenarios: The Unsigned Page

Classification: Premium Scenario Report Date: 2026-06-01 (Day 94 of closure) Analysts: Scenario Planner, Energy Strategist, Geopolitical Strategist Version: 5.0 (updated from v4.0 of Apr 8)

TL;DR

• Signed + flow resumes (40%): Trump and Tehran both sign the 60-day MoU, Iran begins clearing its minefield, and a certified Q-route plus restored P&I cover lets laden hulls move within weeks. Brent drifts to $80-88 as the ~800-vessel backlog floods a re-opening channel. This is the bull case, and it is gated on engineering and insurance, not on rhetoric.
• Signed but commercially shut (35%): The MoU gets signed, waivers issue, and the strait is “open” on every wire, yet barrels stay stuck. Mines remain in the water, P&I clubs hold back blue cards, and Iranian crude clears at a steep discount under 60-day snapback risk rather than at the screen. The backlog stays frozen. Brent holds $88-95. This is the structural-stall outcome the April v4.0 report assigned 15% to as its Bear case. It is now the second-most-likely path.
• Talks collapse, combat resumes (25%): A re-demand from Trump or an exogenous shock - most likely Lebanon - breaks the framework, and low-level kinetic exchange escalates back to open fighting around a still-mined, still-blockaded strait. Brent snaps to $110-120 inside hours to days. This is the under-priced tail: the tape has bought a resolution it does not yet have.
• What the April framework got wrong, and right: The v4.0 SNAP-BACK case (20%, ceasefire collapses back to full war inside two weeks) did not fire. The truce was extended indefinitely on Apr 21 and has survived as a violated-but-intact floor. The v4.0 BEAR case (structural stall, ceasefire without commerce) is essentially what happened. The lesson carried forward: the binding constraint was never political will to pause. It was mines, insurance, and reversible relief.
• The single signal that matters: Laden transits, not ministerial declarations. Araghchi called Hormuz “open to all” on Apr 17 and oil fell 11 percent on the headline. The AIS picture never followed. Watch hull movement.

Situation Context

The strait has been closed in practice for 94 days. The shape of the problem changed entirely between the April 8 report and now, which is why the scenario set is replaced rather than patched.

What the old question was, and why it is answered. On Day 40, v4.0 asked two things: will the two-week ceasefire hold, and can the strait reopen. Both have answers. The ceasefire held. Islamabad talks collapsed Apr 11-12 after ~21 hours, Washington answered with a naval blockade Apr 13 (creating the dual blockade that still defines the map), and instead of snapping back to war the truce was extended indefinitely on Apr 21. It has been violated repeatedly since without breaking: the US seized the Iran-flagged Touska Apr 19, struck Hormozgan and two ships at Hormuz May 7, and hit mine-laying boats at Bandar Abbas May 25; Iran answered late-May “defensive” US strikes in southern Iran with ballistic missiles on Kuwait. None of it ended the truce. The strait, meanwhile, stayed effectively shut. That is the v4.0 Bear case made real.

The new question. The center of gravity has moved from the battlefield to a document. On May 28 Washington and Tehran reached a tentative 60-day memorandum that neither principal has signed. Reported terms: inside a 60-day window Hormuz reopens with no tolls and Iran clears the mines it laid within 30 days, in exchange for the US lifting its port blockade (in proportion to restored commercial traffic) and issuing sanctions waivers, with Iran committing to forgo nuclear weapons and to negotiate disposal of its enriched uranium plus a suspension of enrichment. Trump called the package “largely negotiated” on May 23, then bolted fresh demands on Hormuz, enrichment, and frozen assets onto it May 29-30. Iranian state media says it is not finalized on Tehran’s end either. The live question is narrow and physical: will the page get signed, and if signed, will it move hulls.

Why a signature is hard to reach. The deadlock is a sequencing problem, not a terms problem. Iran will not clear mines (its only remaining coercive card after losing ~92 percent of its largest naval vessels and most of its missile production) before relief is irreversible. Washington will not lift the blockade before transits resume and the nuclear file locks. Neither leader can move first, and neither has the domestic room to. Trump’s defense secretary is signaling readiness to resume combat, which pays claiming capitulation over compromise. Tehran is weaker still: Khamenei is dead, the succession is contested (Mojtaba’s status is now described as unclear), and Pezeshkian and Ghalibaf cannot sell concessions without the IRGC outflanking them. A weak center cannot make irreversible commitments.

Why a signature would not equal flow. Three physical and legal gates sit between the MoU and a moving barrel.

• Mines. MCM vessels sweep a few square nautical miles a day in a 21-mile-wide strait, so certifying a safe Q-route runs into weeks and assumes Iran cooperates and surrenders its minefield records. The field is not even static: May 25 reporting had Iran still emplacing mines at Bandar Abbas.
• Insurance and P&I. War-risk premiums ran a few hundredths of a percent pre-crisis and spike to 1-2 percent of hull value on a hot blockade, ~$1-2M on a $100M VLCC before any toll. P&I clubs can void cover for war-zone transits, which kills the blue cards a lawful port call requires, and restoration lags any ceasefire by weeks.
• Reversible relief. Trump can deliver OFAC relief unilaterally and a general license for crude lifting can issue in days, but it cannot touch the statutory secondary sanctions Congress codified (CISADA, IFCA), waivable only on rolling, time-limited certifications. A barrel sold under a 60-day waiver carries UN snapback risk on a 60-day clock, so it clears at a discount through intermediaries, not at the screen.

The backlog. As of mid-May, 600-plus tankers were trapped inside the Gulf and 240-plus waiting outside, against ~20M bbl/day of pre-crisis throughput. There is no way to flush 800-plus hulls through one lane at once. DHL’s four-to-six-month read on full normalization is the optimistic case, and the clock starts only at a signature.

Market state. Brent trades near $91, off the ~$115 WTI war high set Apr 7, having shed ~19 percent across May, its worst month since 2020. The entire war risk premium has drained out because the tape prices a signed deal it does not have. That gap is the defining feature of the current set: a signature is largely in the price, so the upside on one is small while the downside on a collapse is large.

Scenario Framework

SCENARIO 1: SIGNED + MINES CLEARED + FLOW RESUMES (The Reopening)

Probability: 40%

Question: Both principals sign the 60-day MoU and the physical gates clear fast enough to move laden hulls within the window.

Why this is the modal case. A signature is the path both sides have been circling for six weeks, and the terms are the most concrete they have been. Iran needs revenue and blockade relief; Washington needs a deliverable it can call a win before combat fatigue sets in. The framework already names the gates (no tolls, Iran clears mines, US lifts blockade, waivers issue), which means the negotiators have priced the engineering into the deal rather than discovering it later.

Trigger events:

• Trump signs without a fresh re-demand, and Tehran’s center holds long enough to co-sign.
• Iran hands over minefield records and admits an international or jointly supervised MCM effort to certify a Q-route.
• OFAC issues a general license for crude lifting with an explicit citation, and P&I clubs publish conditional reinstatement for transits inside the certified lane.
• Project Freedom escort operations resume to move the trapped backlog out under cover.

Timeline: Signature is the day-zero event. Q-route certification runs 3-8 weeks given MCM sweep rates and Iranian cooperation. First escorted laden convoys follow certification by days. Routine commercial transit is a 4-6 month build per DHL, with the backlog processed first and new flow layering in behind it.

Price path:

• Brent settles $80-88 as the strait re-opens and the ~800-vessel backlog releases a supply surge.
• Risk of an overshoot below $80 if backlog release and OPEC+ restart coincide.
• VLCC rates collapse from blockade peaks toward $200-350K/day within 2-3 weeks of certification.
• War-risk premiums fall toward 0.5-1 percent of hull as the cleared lane builds a track record.

Leading indicators: both principals sign on the record; Iran releases minefield data; certified Q-route announced; P&I conditional reinstatement notice; laden transits rise above ~10/day on AIS; Project Freedom restarts.

SCENARIO 2: SIGNED BUT COMMERCIALLY SHUT (The Paper Reopening)

Probability: 35%

Question: The MoU gets signed and waivers issue, but mines, insurance, and reversible relief keep barrels stuck and the backlog frozen.

Why this is the second-most-likely case. This is the v4.0 structural-stall Bear case, which was assigned 15 percent in April and which the Apr 9 to Jun 1 record largely validated. A signature removes the political headline but not the physical and legal locks. Iran has every incentive to sign and then move slowly on mine clearance, because uncleared mines are its last coercive leverage and the deal gives it relief on paper regardless. Buyers, in turn, will not lift heavily into 60-day waivers that carry UN snapback risk on a 60-day clock.

What this looks like. Hormuz reads “open” on every wire. Waivers exist. Yet the Q-route is uncertified or only partially swept, P&I cover stays patchy, and Iranian crude clears at a steep discount through intermediaries rather than into Brent-linked Western refineries. The 2023 Qatar escrow precedent applies to any asset-unfreezing leg: host banks moved nothing until OFAC cover landed, and that $6B was re-frozen within weeks. The backlog of 800-plus hulls stays largely in place because owners will not commit vessels to a lane that is legal but not insurable.

Trigger events:

• Signature lands, but Iran drags minefield disclosure or limits MCM access on sovereignty grounds.
• OFAC waivers issue without durable statutory cover, so trading houses price the snapback clock into the discount.
• P&I clubs decline broad reinstatement pending a completed mine survey that Iran has not enabled.
• IAEA access stays blocked, capping how far Washington will extend relief and keeping the deal half-built.

Timeline: Months. The 60-day window expires with the strait open on paper and transits well below pre-crisis norms. Renewals or rolling extensions become the steady state, each one short enough to keep barrels discounted.

Price path:

• Brent holds $88-95, near current levels, as the market keeps pricing a deal that exists but does not deliver volume.
• VLCC rates stay elevated, $300-600K/day, because hulls are available but cannot insure transit.
• War-risk premiums hold 2-4 percent for uncleared-lane transits; discounts of $10-20/bbl on Iranian-origin crude under waiver.

Leading indicators: signature with no minefield-data release; OFAC license text without statutory citation; P&I “insufficient data to reassess”; IAEA access still denied; AIS transits flat near zero despite the open declaration; Iranian crude trading at a widening intermediary discount.

SCENARIO 3: TALKS COLLAPSE, COMBAT RESUMES (The Re-demand)

Probability: 25%

Question: The framework dies before or shortly after signature and low-level exchange escalates back to open combat around a mined, blockaded strait.

Why this tail persists. The six-week record is a metronome of near-deal followed by maximalist re-demand. Islamabad collapsed and drew a blockade; “largely negotiated” on May 23 drew strikes on Bandar Abbas on May 25; the May 28 MoU drew fresh Trump demands May 29-30. The floor is already low-level kinetic exchange (US strikes in southern Iran, Iranian BMs on Kuwait in late May). A collapse does not start from peace; it starts from a violated truce that loses its last restraint.

Collapse triggers (any one sufficient):

• Lebanon (highest-probability detonator). The Apr 17 Lebanon truce is fragile and Netanyahu has vowed to intensify strikes. A senior Hezbollah commander killed, or Hezbollah resuming fire, pressures Tehran’s contested center to void the framework. This nearly broke the truce in April and remains the most likely exogenous trigger.
• A Trump re-demand. A fresh condition on enrichment, Hormuz scope, or frozen assets lands badly in a Tehran that cannot concede, and the page never gets signed. The defense secretary’s stated readiness to resume combat lowers the bar.
• A maritime incident. With mines still in the water, a hull strike with casualties forces a political response neither side can absorb: Iran cannot admit its mines killed crews it promised safe passage, and Washington cannot eat casualties in a strait it called reopening.

Timeline: Collapse inside days to weeks of the trigger. Re-escalation is fast because the forces are already in contact and the blockade infrastructure is already in place.

Price path:

• Brent snaps to $110-120 inside hours to days. The drained risk premium reloads violently because the tape has priced a signed deal it loses.
• VLCC rates return toward $1M/day; war-risk insurance back to 5-10 percent of hull or unavailable.
• This is the asymmetric trade: ~$5-10 of upside on a signature against a $20-30 move on collapse.

Leading indicators: Israel kills a senior Hezbollah commander or Hezbollah resumes fire; Trump posts a new precondition rather than a signature; a mine strikes a transiting hull; US or Iranian strike tempo rises above the late-May floor; Doha or Pakistan/Qatar mediation channels go quiet.

Decision Tree

DAY 94 (Now, Jun 1) - MoU TENTATIVE, UNSIGNED, TRUCE VIOLATED-BUT-INTACT
|
+- THE SIGNATURE (primary binary)
|  |
|  +- Both principals sign clean -> SIGNED branch (75% of mass), then split on mines
|  |  |
|  |  +- Iran releases minefield data + admits MCM -> SCENARIO 1 (flow resumes)
|  |  +- Iran drags clearance / limits MCM -> SCENARIO 2 (paper reopening)
|  |
|  +- Trump issues fresh re-demand -> SCENARIO 3 pressure rises
|  +- Tehran center fractures / cannot co-sign -> SCENARIO 3 pressure rises
|
+- THE MINES (gate inside the SIGNED branch)
|  |
|  +- Certified Q-route within weeks -> SCENARIO 1
|  +- Sweep stalls on sovereignty objection -> SCENARIO 2
|  +- Hull strikes a mine -> SCENARIO 3 spikes, Brent $110+
|
+- INSURANCE / P&I (gate inside the SIGNED branch)
|  |
|  +- Conditional reinstatement + OFAC license w/ citation -> SCENARIO 1
|  +- "Insufficient data" + reversible waivers only -> SCENARIO 2 dominant
|
+- LEBANON (continuous exogenous risk)
|  |
|  +- Israel kills senior Hezbollah cmdr / Hezbollah resumes fire -> SCENARIO 3 +10%
|  +- Truce holds -> no change (but fragile)
|
+- NUCLEAR FILE (caps how far relief extends)
   |
   +- IAEA access granted -> SCENARIO 1 enabled
   +- IAEA access denied -> SCENARIO 2 ceiling on relief; SCENARIO 3 risk if used as pretext

Wild Cards

1. Mine strike during a paper-open strait (Probability: 15-20%). The most dangerous accident in the set. The field is uncleared and possibly still growing (Bandar Abbas emplacement reported May 25). As any hull tests the “open” declaration, a casualty event forces a political response that neither side can manage cleanly. Pushes hard toward Scenario 3, Brent $110+ within hours.

2. Tehran succession shock (Probability: 15-20%). Khamenei is dead and the succession is contested. A clarifying event - Mojtaba consolidating, or the IRGC asserting primacy - could either produce a center able to sign (toward Scenario 1) or one that voids the framework to prove resolve (toward Scenario 3). The uncertainty itself is what keeps Tehran from making irreversible commitments today.

3. Lebanon reignites (Probability: 20-25%). The structurally likeliest collapse trigger, exactly as in April. Netanyahu’s vow to intensify strikes is the live wire. A single senior-commander killing can cascade into the framework’s death.

4. OFAC over-delivers (Probability: 10-15%). If Washington issues durable, well-cited relief that the market reads as more than 60-day wind-down cover, the discount on Iranian crude narrows and the SIGNED-but-shut case migrates toward full flow. Low probability given the statutory ceiling (CISADA, IFCA) and the contested nuclear file, but it is the cleanest path to a fast normalization.

5. Backlog flush overshoots (Probability: 15-20%). If Scenario 1 fires and ~800 trapped hulls release into a reopening lane alongside an OPEC+ restart, the supply surge could overshoot Brent below $80 before the curve re-balances. A bullish-resolution outcome that is bearish for price.

What to Watch: Top 6 Indicators

Second-Order Effects

Economic. The war premium is already gone, so the macro relief is largely banked: Brent near $91 versus the ~$115 WTI high. The remaining downside for consumers sits in Scenario 1 (a backlog flush toward $80-88) and the remaining upside shock sits entirely in Scenario 3 ($110-120 inside hours). South Asian and East Asian importers that rationed through April get durable relief only when transits actually rise, not when ministers declare the strait open. The signed-but-shut case (35 percent) keeps them in a holding pattern for months.

Political. Trump owns the signature decision and the re-demand decision; these two outcomes have alternated for six weeks and define the binary. Tehran’s contested succession caps how far it can commit, which is why the modal outcome is a signed deal that then stalls on mines rather than a clean reopening or a clean collapse. Pakistan and Qatar carry the mediation; their channels going quiet is itself a Scenario 3 signal.

Market structure (persists across all three paths). Gulf-origin crude is repriced for years: the war proved mines, drones, and ballistic missiles can shut the world’s most important chokepoint, and buyers have diversified toward the Atlantic Basin and US shale. War-risk insurance for Hormuz carries a structural premium regardless of which scenario lands. The 800-plus-hull backlog guarantees a multi-month processing lag even in the bull case. A two-tier flag market (Iranian-cleared versus Western-flagged) hardened during the blockade and will outlast any signature.

Recommendation

For traders. The asymmetry flipped between April and now. In v4.0 the market was long resolution and the tail was war. Today the market has already bought resolution at ~$91, so the cheap, mispriced trade is the collapse: a signature adds maybe $5-10 of downside to price (Scenario 1 toward $80-88), while a collapse adds $20-30 of upside (Scenario 3 toward $110-120). Own upside call spreads at $105-120 as a Scenario 3 hedge; the premium is cheap because the tape disbelieves collapse. The signature and the next re-demand are the binary events. Sell volatility only after laden transits actually rise, not on a ministerial “open” headline.

For shipping. “Signed” will not mean “safe to transit.” Until there is a certified Q-route and restored P&I cover, the strait is legal-on-paper and uninsurable-in-practice. Do not commit hulls without (a) a published cleared lane, (b) blue cards reinstated for that lane, and (c) escort or convoy cover. The 800-plus-hull backlog means a multi-week to multi-month processing queue even in Scenario 1; position for elevated rates ($300-600K/day) through the build. Keep Cape of Good Hope and Atlantic Basin routing live.

For corporate and policy. Plan on the 35 percent signed-but-shut case as the working baseline, because it is the most operationally consequential: a deal that exists but does not deliver volume keeps supply chains constrained for months. Build the Scenario 1 normalization plan (4-6 month Hormuz recovery from signature) and the Scenario 3 contingency ($110-120 oil inside hours) in parallel. Demand the explicit OFAC general-license citation before treating any waiver as durable relief; treat 60-day waivers as wind-down cover, not as a basis for long supply commitments.

For all. Ninety-four days in, the page that would change everything is written; it is just not signed. The signature is the binary, the mines are the gate, Lebanon is the detonator, and laden transits are the only honest scoreboard.

Sources & Methodology

Data sources: TankerBrief Crisis Situation Report v34 catch-up (2026-06-01), fact-checked via WebSearch, and the June 1 daily brief “Hormuz Day 94: The Unsigned Page.” Specific anchors: tentative 60-day MoU reached May 28 (unsigned by both Trump and Tehran); ceasefire indefinite since Apr 21 with violations Apr 19 (Touska seizure), May 7 (Hormozgan/Hormuz), May 25 (Bandar Abbas mine-laying strikes), plus late-May US strikes in southern Iran answered by Iranian BMs on Kuwait; Brent ~$91 (off the ~$115 WTI high of Apr 7, down ~19 percent in May); strait open on paper but transits near zero since ~May 6; ~600 tankers trapped inside the Gulf and 240-plus outside; DHL four-to-six-month normalization read; nuclear talks stalled with IAEA access refused; Lebanon truce Apr 17 with Netanyahu vowing to intensify. Statutory and precedent anchors: CISADA/IFCA secondary sanctions; 2023 Qatar $6B escrow re-frozen within weeks.

Methodology: Three-scenario framework with probabilities summing to 100 percent, reconciled to the June 1 panel weights (energy-strategist x geopolitical-strategist). The v4.0 four-scenario set (Apr 8) is retired: its SNAP-BACK-to-war tail (20 percent) did not fire because the truce was extended indefinitely Apr 21 rather than collapsing, and its structural-stall Bear case (15 percent) is essentially what materialized. The current set replaces “will the truce hold and can the strait reopen” with “will the MoU get signed and move hulls.” Price ranges derive from the observed deflated tape ($91 Brent), the war high ($115 WTI), backlog mechanics, and the statutory ceiling on durable relief.

Limitations: Assumes no nuclear detonation and no full GCC entry as independent belligerents. Mine-stockpile and clearance-rate estimates carry wide uncertainty, and no precedent exists for restoring P&I cover after a 90-plus-day mine-warfare campaign. Tehran succession is unresolved (Mojtaba Khamenei status unclear), which is itself a driver of the signed-but-stalled bias. The 60-day window is shorter than the minimum time to certify a Q-route and restore insurance, so even a clean signature does not guarantee in-window flow.