Why the Iran War Isn’t Ending: The Strait, the Clause, and the Tollbooth

Nearly five months after the first bombs fell, the Iran war has settled into something more dangerous than its opening phase: a grinding attrition cycle with no negotiating channel, a functionally closed Strait of Hormuz, and two governments whose stated terms are mutually exclusive. This report sets out how the June ceasefire collapsed, why the structural obstacles to peace are worse than they appear, and what it means for positioning.

The war in brief

Operation Epic Fury, the joint US–Israeli air campaign, opened on 28 February 2026 with a strike that killed Supreme Leader Ali Khamenei. Iran responded with mass missile and drone attacks across the region and closed the Strait of Hormuz. Hezbollah opened a second front from Lebanon; Israel answered with ground operations. Pakistan brokered a two-week pause in early April, the formal campaign concluded on 5 May, and on 17–18 June the United States and Iran signed a 14-point memorandum of understanding — Trump signing at Versailles, President Pezeshkian in Tehran, with new Supreme Leader Mojtaba Khamenei giving reluctant assent.

Neither government has published the text, but according to the US read-out and contemporaneous reporting, the MoU committed both sides and their allies to a permanent termination of military operations on all fronts including Lebanon, a toll-free reopening of the strait for at least sixty days, a final deal within sixty days, and a US-regional reconstruction package for Iran of at least $300 billion, with frozen assets to be addressed in later phases.

Operationally, it began breaking down within three days.

Failure point one: the Lebanon clause

The MoU’s first clause tied the US–Iran ceasefire to a cessation of hostilities in Lebanon — a linkage Iran insisted on and that reportedly bypassed US efforts, led by Secretary Rubio, to keep the two conflicts diplomatically separate. The problem was immediate: Israel is not a party to the memorandum, continued striking Hezbollah positions in southern Lebanon, and stated publicly it would not withdraw its forces.

On 20 June, Iran’s Khatam al-Anbiya central command declared the strait closed to vessel traffic, citing the failure to implement the first clause and continuing Israeli strikes in Lebanon, calling it a “first step.” A brief de-escalation followed on 22 June — Washington waived sanctions on Iranian oil sales for sixty days, freeing an estimated 67 million barrels of stored crude largely destined for Chinese refiners, and Trump kept the strait open while leaving US ships in position — but the underlying disputes were untouched.

The lesson for anyone modelling this conflict: the ceasefire’s binding constraint is a third party’s behaviour. Iran conditioned everything on Lebanon; the US cannot deliver Israeli compliance; the deal was therefore structurally unenforceable from the day it was signed.

Failure point two: the tollbooth

Iran’s post-war posture on Hormuz is revisionist rather than restorative. Chief negotiator Ghalibaf has said the strait “will never return” to pre-war free passage, and Iranian officials and military statements have indicated Tehran seeks approved routes, transit protocols, and potentially a fee-based regime — one that estimates suggest could generate on the order of $40 billion a year for an economy strangled by sanctions and blockade. Iranian assets frozen worldwide are estimated at $100–123 billion. Tehran’s demand, reportedly written into the Mehr-published draft of the MoU, is the release of a $24 billion tranche — $12 billion immediately on signing and $12 billion within sixty days — and its negotiators in Doha called the deposit of those funds a precondition for any agreement. Washington’s counter, per the Wall Street Journal, was a mechanism built with Qatar around roughly $6 billion held in Doha, restricted to humanitarian purchases, as a possible first step toward the larger tranche. Iran rejected the restrictions, insisted its assets would be “employed with absolute liberty,” and — offered cash against dropping its toll demand — declared the strait “under Iran’s command” instead.

In our assessment, that choice of leverage over cash is the single most informative indicator of Tehran’s strategic priorities in this war — because with its military degraded, its nuclear sites struck, and its previous supreme leader dead, the strait has become its most important remaining instrument of coercion. No settlement that requires Iran to surrender that instrument for promises will be signed by a weak regime that has already watched one agreement collapse.

Failure point three: the verification vacuum

The nuclear file is deadlocked in both directions. Iran will not admit IAEA inspectors to the damaged Fordow, Natanz, and Isfahan sites before a final agreement, and the Agency has had no access to any struck facility since the attacks — it cannot assess their condition, the status of the nuclear material, or verify anything at all. For balance, both the US Director of National Intelligence and Iran’s IAEA ambassador say enrichment has not resumed, and satellite imagery shows no evidence that it has. But Washington’s terms include the handover of Iran’s highly enriched uranium stockpile, and there is no inspection regime through which such a transfer could even be verified. The demand and the mechanism to satisfy it do not currently coexist.

Where we are now

The truce died operationally in the first week of July. Iran fired on three commercial vessels on 6–7 July; on the 7th, Trump said he considered the truce over. The US has now flown strikes on seven consecutive nights, per CENTCOM figures reported by CNN and CBS — roughly 140 targets in the largest wave, the campaign’s first daylight raids, and strikes reaching 200 kilometres inland to army barracks at Iranshahr, a meaningful shift from anti-shipping targets toward general military attrition. US forces have begun shooting enforcement of a reimposed blockade, disabling an empty tanker sailing toward Kharg Island, Iran’s main oil export terminal. Iran, unable to strike the US homeland, is escalating horizontally: missile and drone fire against Kuwait, Qatar, Jordan, Oman, and the UAE, and claimed attacks on US forces in Bahrain and Syria.

Washington’s published terms for ending it — all Hormuz channels open without tolls, attacks on shipping halted, the HEU stockpile surrendered — amount to Iran relinquishing every remaining source of leverage in exchange for a ceasefire it has already seen fail. Tehran’s counter-position, anchored on Israeli withdrawal from Lebanon and sanctions removal, requires Washington to deliver things partly outside its control. The Qatari channel remains the only live diplomatic thread. Iran’s release this week of an American woman detained since December 2024 — praised by Trump as a gesture of goodwill — is the lone conciliatory signal; its foreign ministry says Iran has no plans for negotiations with the US, a tell that talking under fire is domestically impossible in Tehran. The International Crisis Group’s Ali Vaez captured the asymmetry: two months to negotiate a page and a half; three weeks for it to unravel. His warning of a “forever war” is, in our assessment, the most plausible base case until one side’s cost tolerance breaks.

In bargaining-theory terms, all three classic drivers of war persistence are present at once: a commitment problem (neither side can credibly guarantee compliance, and one binding constraint sits with a non-signatory third party), asymmetric information (a sealed nuclear programme no one can inspect), and objectives that are simply incompatible (a strait that cannot be both tolled and free).

Market implications

Hormuz carries roughly a fifth of the world’s oil and gas in peacetime — about 20 million barrels per day at baseline. Transit counts tell the story of decay, though trackers diverge: from a pre-war baseline of roughly 90–100 ships daily, MarineTraffic data cited by CNN showed as few as three transits in the 24 hours to 16 July, while other tracking recorded 15 crossings on the 15th and eight in the latest count — the lowest in three weeks. The more telling detail is that seven of those eight used Iran’s prescribed route through the strait rather than the US-supported corridor along the Omani coast: the ships still moving are complying with Tehran’s routing regime. Whichever tracker one prefers, that is functional closure with a tollbooth taking shape inside it. Crude has priced the oscillation rather than the tail: Brent fell to $71 on 1 July as the truce held, then surged to $88 by the 17th — its strongest weekly gain in months — yet remains well below the 5 May peak of $114, a market repricing disruption materially while still not paying for the worst case. No combination of the Saudi and Emirati bypass pipelines can replace the full volume, and there is no bypass at all for Qatari LNG — the sharpest asymmetry sits in LNG-dependent European and Asian gas markets rather than in crude, where spare pipeline capacity and released Iranian floating storage provide partial buffers.

The base case of a prolonged gray-zone conflict supports the framework this blog has run since the February shock: hard assets and energy-linked cash flows over duration; short-dated inflation-linked exposure over nominal long bonds; defence; Singapore and Asian income streams with limited Gulf transit dependence; caution on consumer discretionary and on growth multiples priced for a benign rate path. The tail risks cut both ways. A strike on the Pickaxe Mountain complex (Kolang Gaz La, the deep underground facility near Natanz whose construction has been tracked in open-source satellite-imagery analyses since 2023) — reportedly under consideration — would mark the first nuclear-associated target of this cycle and reprice everything higher. Conversely, the Doha channel plus mutual exhaustion could yet produce a second, better-drafted truce; the June sanctions waiver showed how quickly released Iranian supply can cap crude. Position for persistence, but respect the optionality in both tails.

Key assumptions

Our central scenario rests on four assumptions, each of which, if broken, would change the view: the Strait of Hormuz remains functionally constrained; no comprehensive Israel–Hezbollah settlement emerges; no verified nuclear inspection regime is established; and Gulf shipping remains intermittently disrupted. A durable reopening of the strait or a credible inspection framework would be the earliest signals that the persistence thesis is failing.

This report draws on reporting from Reuters, CNN, CBS, Al Jazeera, France 24, the Times of Israel, Britannica, the UK House of Commons Library briefing on the US–Iran ceasefire, and open-source military tracking. The MoU text has not been published by either government; characterisations of its clauses rely on the US read-out and briefed accounts.

This report expresses Claremont’s current assessment based on publicly available information as of 19 July 2026. It is intended for informational purposes only and should not be construed as investment, legal, or geopolitical advice. Assessments may change as new information emerges.