Hormuz: The Structural Damage

Six days ago, "Hormuz: What Happens Next" framed resolution within a May horizon. That timeline no longer holds. Mojtaba Khamenei has been installed as supreme leader under IRGC pressure, has not appeared on camera, and in his first statement explicitly invited Houthi and Iraqi militia participation (Axios, Mar 12). Mines are in the water (Reuters, Mar 11). Thirteen ships have been attacked (UKMTO, Mar 12). Transit has dropped from 153 ships per day to approximately zero (CSIS/Starboard AIS). The IEA has released the largest emergency oil reserves in its 52-year history. The question is no longer whether operations normalize by spring. It is how far into the second half of 2026 the economic damage extends -- and why a ceasefire does not end it.

The dashed extensions on each branch represent the normalization period after hostilities end -- insurance reinstatement, producer restart, rerouting unwind, and downstream supply chain effects. Branch E runs horizontally across the full timeline because its effects are accumulating regardless of which war outcome materializes. The roadmap extends through September because even the best-case resolution carries a months-long economic tail.

The consensus assumption is that a ceasefire leads to reopening leads to normalization. The error is treating that as a single event. Several constraints are running simultaneously, and not all of them compress with a ceasefire.

The resolution space is a race between two constraints. The first is Iran's economic depletion: the strait closure cuts off Iran's own exports, China has halted fuel exports (Bloomberg, Mar 5), and Iran pre-drew storage before the strikes. But Iran's shadow fleet is still moving crude through the strait to China -- at least 11 million barrels since February 28 (Lloyd's List/Kpler, Mar 10). Iran is selectively enforcing the closure. The second constraint is America's political pain tolerance: Brent hovering around $100, analysts projecting $120-150 if the closure persists (Commonwealth Bank, Mar 12), and the IEA reserve release buying approximately 26 days at the current shortfall rate (CNN, Mar 12). Iran's strategic calculation appears to be that American domestic pressure reaches critical mass before Iran's revenue constraints become existential.

The question of why Iran would sustain this strategy has a direct answer in the circumstances of the succession. When a head of state is assassinated alongside family members on day one of a conflict, the institutional priority shifts to regime survival. Mojtaba Khamenei's first statement -- text only, read by a TV anchor, no video or audio (Al Jazeera, Mar 12; Axios, Mar 12) -- demanded closure of all US bases and invited Houthi and Iraqi militia participation. Iranian President Pezeshkian, by contrast, suggested conditions for ending the war (Al Jazeera, Mar 12). That split is the most important observable signal in this analysis. Russia's support -- Putin pledged "unwavering support" (AP, Mar 10) and is providing drone warfare capabilities from the Ukraine theater -- reinforces the attrition posture.

The structural damage that extends beyond any ceasefire runs on several tracks simultaneously. Insurance: P&I coverage was pulled March 5, war-risk premiums are at wartime levels (Globe and Mail, Mar 11), and reinstatement requires demonstrated safe passage, not an announcement -- crews retain the right to refuse war-zone entry. Mines: approximately a dozen deployed, most locations known (Reuters, Mar 11), but Iran retains 80-90% of its small boat fleet (CNN, Mar 10) and a pre-war inventory of 2,000-6,000 mines (CBS News). Safe corridors exist -- Iran's own ships use them -- so the question is corridor verification speed, not full-strait clearance. Producer restart: 10 million bpd shut in, 3+ million bpd of refining offline (IEA, Mar 2026), and restart takes weeks to months depending on shutdown duration. Rerouting: Maersk, CMA CGM, and Hapag-Lloyd have suspended transits, ships are committed to Cape of Good Hope routes, and unwinding those diversions takes two to five weeks after normalization begins (Traffix/CNBC, Mar 11). Fertilizer: one-third of global fertilizer trade transits the strait (CNBC, Mar 11), urea prices up 43% to $680/mt, and the Midwest spring planting window for soy and corn is closing now. A missed planting window does not come back. Food price effects show up in Q3 and Q4 regardless of when the strait reopens.

Three signals will define which branch the situation is moving toward. These are not predictions. They are trigger conditions that update the probability distribution in real time.