SCENARIO PROBABILITIES Updated: Jul 26, 2026
Path 1 carries the largest single share, 30%, because Saudi Arabia has shown twice in 48 hours that its stated preference is proportionate retaliation against Hodeidah, not campaign expansion, and because Patriot coverage held on the first Houthi attempt against Yanbu. Paths 2 and 3 split the merger scenario 20% each: once the 7/10 Saudi-Houthi escalation score and Riyadh's 'without leniency' warning are taken at face value, a third strike on Saudi oil infrastructure inside the window is more likely than not, and this desk has no strong basis for weighting confirmed structural damage against contained, intercepted damage beyond the fact that Patriot defenses have held so far, a coin-flip split with a working track record. Combined, the three merger paths (2, 3, and 5) total 55%, landing inside the 55-60% collapse odds already published in today's brief. Path 4 gets 15%, lower than a mirror-image restraint case would earn on the Iran-US track in isolation, because the precedent Riyadh just broke, absorbing Abqaiq-Khurais in 2019 without hitting back, was broken specifically because Yanbu is no longer spare capacity; a kingdom that changed its own calculus once this week carries a higher bar to simply revert to it. Path 5 sits at 15%, not lower, because the Oman channel is one night old, untested, and running against the 85-90% base rate of collapse already carried for the broader ceasefire track; a channel this fragile failing on its own terms inside two weeks is closer to the modal case for that track than a tail case.
Two Fronts Hold 30%
Riyadh's response stays confined to Yemen, no confirmed Yanbu capacity loss, the Oman channel keeps the CENTCOM pause in place $98-106
Merger, Terminal Holds 20%
A further Houthi hit gets treated as Iranian-linked and reactivates the shelved US strike plan, but Yanbu keeps functioning at reduced throughput $108-120
Merger and Chokepoint Failure 20%
Confirmed structural damage takes Yanbu's loading capacity offline for weeks with Hormuz already near zero $118-135
Riyadh's Restraint, Tehran's Restraint 15%
No third strike materializes, both fronts cool, some of the geopolitical premium unwinds $94-100
The Channel Fails on Its Own Terms 15%
The Oman-Iran talks collapse independent of the Houthi file, and the shelved strike plan resumes regardless $105-122

Two tracks that this desk has covered as separate for weeks moved toward each other overnight. Today's brief carried the incident: Houthi forces struck Saudi Aramco's Jizan refinery and the Yanbu export terminal overnight Jul 24-25, the first direct hit on Saudi oil infrastructure this crisis, and Saudi Arabia hit back for the second time in 48 hours. Geopolitical Strategist put the odds that the "two separate fronts" framing collapses within one to two weeks at 55-60%. This piece runs the tree behind that number: does the cooling Iran-US track and the hardening Houthi-Saudi track stay analytically distinct, or merge, and does Yanbu, the one export route Saudi Arabia has left, survive either way.

Yanbu's importance is not new information. One Route Left mapped it on Jul 15 as Saudi Arabia's sole working bypass once Hormuz shut. The Xin Long Yang Test and The Sounion Test each ran the corridor's survival ship by ship, tanker by tanker, through the following week. What changed overnight is the target set: this is no longer a question of whether cargo clears Bab el-Mandeb, it is a strike on the terminal itself, on Saudi soil, against Saudi Aramco. That is a different kind of test, and it resolves on a different clock: five paths, the fourteen days from Jul 26 to Aug 9.