A Signature Is Not a Strait: The Hormuz Deal and the Clock That Follows
The proposed Iran–Oman arrangement is a set of coordinates, not a reopening — and when the strait does reopen, war-risk insurance resets on weeks of demonstrated safe transits, not on announcements.
What changed
Iran and Oman agreed coordinates for new commercial routes through Hormuz — parts running through Iranian waters rather than Omani ones for the first time in decades — with reopening explicitly contingent on the US naval posture. Brent rose ~4.8% in two sessions into the deal (79.45 → 83.27). Citi raised its Q3 forecast to $80 citing the prolonged back-and-forth, and the shipping industry publicly called the draft unworkable.
The mechanism
While the strait was shut, trade rerouted permanently: Phillips 66 disclosed it is now the world's third-largest buyer of Venezuelan crude, via chartered fleets and Jones Act waivers — capacity that does not unwind on a signature. War-risk insurers reprice on demonstrated safe transits over weeks; crews and schedules rebuild over months. Meanwhile crude fell more than a tenth in a week and pump prices barely moved — the bottleneck has already migrated to refining.
Why it matters — and the on-record call
A reopened strait returns the barrels without returning the flows. Our scoring criteria, logged 8 August: four weeks after any reopening announcement, check war-risk quotes, transit counts, and the pump-vs-crude spread. A signature ends a headline. It does not end a risk premium.