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strait-of-hormuz — Vault Index

Research Goal

Understand the full sequence of events, key decisions, and root causes of the 2026 Strait of Hormuz crisis — from the initial US-Israel strikes on Iran through the blockade declaration, ceasefire cycles, and ongoing standoff.

Recon Documents

Deep Recon: Mine Contamination (2026-04-20)

Central finding: “What is the full scope of mine contamination?” is a malformed question. The scope cannot be answered as a metric because the cascading failure of knowledge about mines is the strategic reality — both Iran and the US benefit from the uncertainty, which is why it persists. Three framings developed:

  • The Physical Minefield — ~dozen to two dozen mines deployed; US Navy found zero confirmed mines after 9+ days of clearance (Politico, April 15). Plausibly sparse; insufficient to explain the closure.

  • The Narrative Minefield — “Iran lost its mines” traces to anonymous US officials (NYT, April 10), published in the same 24-hour window as the blockade announcement and CENTCOM transit. Iran’s own routing map and Toll Booth System both require positional knowledge, contradicting total loss-of-track.

  • The Strategic Minefield — Iran can re-seed any cleared channel overnight. Mine uncertainty reinforces the Toll Booth System. The US declared blockade and demining simultaneously — irreconcilable objectives unless the goal is US-administered access, not restored commerce.

→ Open questions: mine-contamination-questions

Full Entity Notes

Round 0 — Seed

  • Iran IRGC — IRGC enforced the Hormuz closure using drones, mines, gunboats, and GPS spoofing; 21 confirmed ship attacks; toll booth operator.
  • Oil Price Impact — Brent crude peaked at $126/barrel; largest energy supply shock since 1970s; 9-12% single-day swings on open/close announcements.
  • Strait of Hormuz — 21-mile-wide chokepoint carrying 20% of global seaborne oil; effectively closed since Feb 28, 2026.
  • US Naval Blockade — Counter-blockade of Iranian ports declared April 12 after Islamabad talks collapse; targets ships entering/leaving Iranian ports.

Round 2 — Core Conflict

  • 2026 Iran War — Armed conflict between US/Gulf coalition and Iran from Feb 2026; Operation Epic Fury killed Khamenei, triggering Hormuz closure and dual blockade standoff.
  • 2026 Lebanon War — Israeli-Hezbollah conflict that Iran linked directly to Hormuz reopening terms — April 17 opening was “for duration of Lebanon ceasefire.”
  • Ceasefire Cycles — Repeated ceasefire agreements, violations, and collapses in April 2026; Pakistan-mediated; mine problem undermines credibility of every agreement.
  • International Response — EU Operation Poseidon naval escort; China/Russia UN Security Council veto; Japan/Australia logistics support; India dual-track.

Round 4 — Key Mechanisms

  • 2026 Strait of Hormuz Crisis — Full parent article: timeline Feb 28 – Apr 20, economic cascade, dual blockade standoff.
  • Naval Mines Crisis — Iran’s erratic mine-laying from March 10 created a physical constraint independent of political will; CENTCOM clearance started April 11, zero confirmed mines found after 9 days.
  • Toll Booth System — Iran’s selective passage system for aligned nations (China, Russia, India, Iraq); up to $2M/transit in yuan; northern channel north of Larak Island.

Stubs

Round 0

  • 1970s Energy Crisis — Historical benchmark; 2026 Hormuz crisis exceeds it (stub)
  • Abbas Araghchi — Iran’s Foreign Minister; “technical limitations” phrase; April 17 strait-opening announcement (stub)
  • Ali Khamenei — Supreme Leader killed in Operation Epic Fury, Feb 28, 2026 (stub)
  • Alireza Tangsiri — IRGC Navy commander killed March 26, 2026 (stub)
  • Cape of Good Hope — Alternative shipping route adding 10-15 days; insufficient for Hormuz oil volumes (stub)
  • China — ~1/3 of oil imports via Hormuz; first granted selective passage; vetoed UN resolution (stub)
  • Donald Trump — Declared blockade April 12; threatened 50% tariffs on Iran-assisting nations (stub)
  • East-West Crude Oil Pipeline — Saudi Hormuz-bypass pipeline, 5M bbl/day capacity (stub)
  • Fertilizer Crisis — 30% of global fertilizer trade via Hormuz; urea prices +50% (stub)
  • Global Economy — Systemic cascades: fuel rationing, food shortages, force majeure (stub)
  • IEA Emergency Reserves Release — 400M barrels released March 11; ~4 days global consumption (stub)
  • India-Iran Diplomatic Incident — IRGC fired on Indian-flagged ships April 18-19; India summoned ambassador (stub)
  • Iranian Cargo Ship Seizure — Touska seized by USS Spruance April 19, 2026; first blockade seizure (stub)
  • Islamabad Talks — US-Iran talks April 11-12; collapsed over nuclear demands; triggered blockade (stub)
  • JD Vance — US VP; led Islamabad delegation (stub)
  • Mohammad Bagher Ghalibaf — Iranian Parliament speaker; declared April 18 Hormuz remains under Iranian control (stub)
  • Operation Epic Fury — US-Israel airstrike campaign Feb 28, 2026; killed Khamenei (stub)
  • QatarEnergy — Force majeure on all gas contracts March 4; eliminated ~20% global LNG supply (stub)
  • Shipping Disruption — Tanker traffic fell 70% within days; 230 oil tankers stranded in Gulf (stub)

Round 2

  • Hezbollah — Iran-backed Lebanese militant group; activated following Operation Epic Fury (stub)
  • Mojtaba Khamenei — Leading candidate to succeed Ali Khamenei as Supreme Leader (stub)
  • Operation Poseidon — EU naval escort mission (France, UK, Germany, Italy, Netherlands) (stub)
  • Pakistan — Key neutral mediator; hosted Islamabad Talks; brokered April 8 ceasefire (stub)

Round 4

Open Questions

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