DECODING: the June memorandum that reopened Hormuz is collapsing

A fragile diplomatic text, a short-lived victory

In mid-June 2026, Washington and Tehran signed a memorandum of understanding rightly presented as a turning point in the Strait of Hormuz crisis. After 60 days of intense talks conducted under the joint mediation of Pakistan and Qatar, the agreement had allowed the lifting of the American naval blockade and a gradual reopening of maritime traffic in this strategic waterway through which a considerable share of the world's oil transits. On paper, it was a text that ended months of economic asphyxiation and military tension in the Persian Gulf.

But Middle East diplomacy has this cruelty: it measures its victories in weeks, rarely in years. This memorandum, however meticulously negotiated, did not survive the test of time. In early July, Iranian attacks on commercial vessels revived a conflict everyone believed, if not resolved, at least paused for good. Understanding what allowed this lull, and why it collapsed so fast, is essential to anticipating what comes next in a crisis that directly threatens the world's energy supply.

Why Hormuz matters to the entire world

The Strait of Hormuz is not just a regional hot spot. It is one of the most critical chokepoints in the world's energy geography, a narrow passage between Iran and the Arabian Peninsula through which a major share of the crude oil exported on international markets transits. Every closure, every blockade, every attack on a vessel in this zone almost immediately translates into swings on global oil markets and added pressure on Western energy supply chains.

It is precisely this strategic centrality that explains the intensity of the diplomatic efforts deployed by Pakistan and Qatar to secure an agreement between the two belligerents. A strait blocked for months represents a colossal economic cost, not only for Iran and the United States, but for the entire global economy, which is why so many regional and international players had a stake in seeing this mediation succeed.

There is a bitter lesson in this story: even the most carefully negotiated agreements are worthless against a regime that treats diplomacy as a mere tactical pause. The June memorandum deserved to be praised. Its rapid collapse should, without nuance, be condemned.

Lifting the American naval blockade

One of the central elements of the June deal was the lifting of the American naval blockade that weighed on the waters surrounding the Strait of Hormuz. That blockade, put in place by American forces as part of a maximum pressure strategy on Iran, had paralyzed a significant share of commercial maritime traffic in the region for weeks. Its lifting, negotiated under the memorandum, represented a significant American concession, balanced by Iranian commitments to secure commercial traffic.

This gradual lifting fit within a logic of mutual de-escalation: each side agreed to retreat on certain points to allow a gradual normalization of maritime traffic. International shipowners and marine insurance companies had welcomed this development as a positive, if cautious, signal about the possibility of a return to normal in a region where chronic instability had for months dictated the risk premiums applied to every crossing.

A reopening designed to be gradual, not immediate

The memorandum did not call for an instant, full reopening of the strait, but a phased normalization of maritime traffic. This gradual approach responded to practical security imperatives: it was necessary to ensure de-escalation commitments held before allowing a massive return of commercial vessels into a zone that, despite the agreement, remained heavily militarized on both sides.

This methodological caution, which at the time seemed like sound risk management, paradoxically proved its worth when the crisis resumed in early July. Since the reopening had never reached its full capacity, the economic impact of the new partial closure was, in a sense, less brutal than it would have been had traffic already fully resumed. But that changes nothing about the fundamental finding: the agreement did not deliver on its promise of lasting stability.

One would like to say the negotiators' caution paid off. But let's be honest: a gradual reopening that collapses before even reaching full capacity is not a victory for caution — it is an admission that no one, in Washington or Tehran, truly believed this agreement would last.

Two regional players with their credibility on the line

The initial success of the mid-June memorandum rested largely on the diplomatic commitment of Pakistan and Qatar, two regional players with privileged communication channels to Tehran, unlike many Western powers whose relations with Iran have remained tense for decades. These 60 days of talks mobilized considerable diplomatic resources, with constant back-and-forth between capitals to keep both parties at the negotiating table.

The choice of these two mediators was no accident. Qatar has built, over the years, a reputation as a discreet and effective mediator in the region's most complex conflicts, while Pakistan brings a geographic and cultural proximity that eases dialogue with Iranian authorities. This combination had produced a text that even the most skeptical observers, in June, considered a real diplomatic advance.

A mediation legacy now under threat

The relapse of the conflict in early July puts these two mediators in an uncomfortable position. Their diplomatic work, praised at the time, now risks being seen as insufficient to guarantee lasting peace. According to Al Jazeera, the mediators have since repeated urgent calls to both parties to honor the terms of the memorandum, a clear sign that the regional diplomatic community perceives the risk of a full collapse of a framework negotiated with such effort.

This is a decisive moment for the future of regional mediation in the Middle East. If Pakistan and Qatar manage to bring both parties back to renewed respect for the agreement, their diplomatic credibility will emerge strengthened. If, on the contrary, the break is confirmed for good, it is the entire model of regional mediation, resting on players culturally close to Iran rather than on traditional Western powers, that will be called into question.

Pakistan and Qatar deserve recognition for securing an agreement where Western powers had failed for months. But mediation is not enough if one party never intended to honor it for the long run.

A tension that never truly disappeared

Contrary to what the official narrative around the June memorandum might suggest, tension in the Strait of Hormuz never completely disappeared, even after the agreement was signed. The Iranian Revolutionary Guard, the key paramilitary force in Iran's maritime security apparatus, continued to maintain a significant military presence in the zone, a signal that Tehran probably never viewed this agreement as a definitive renunciation of its power-projection capability in the strait.

The most seasoned observers of the region had, in fact, warned as early as the memorandum's signing that its durability would depend entirely on Iran's political will to honor commitments that ran against the doctrine of strategic control of the strait defended for years by Tehran's authorities. Those warnings, largely ignored in the euphoria of June's diplomatic announcement, now look prescient.

Attacks on commercial vessels as a test of limits

The Iranian attacks on commercial vessels transiting the strait, which preceded the American strikes of early July, must be understood as a deliberate test of the June deal's limits. By attacking civilian ships, Tehran was sending a clear message: reopening the strait remains conditional on rules Iran intends to impose unilaterally, regardless of the precise terms negotiated in the memorandum.

This logic of gradually testing limits is nothing new in Iranian diplomacy. The regime has, in the past, regularly used calibrated provocations to gauge its adversaries' reactions before deciding whether it could push its tactical advantage further. The fact that these attacks directly preceded a massive American response on more than 80 targets shows that Washington, this time, was not willing to tolerate this kind of provocation without a firm reply.

Let's call this what it is: not an isolated incident, but a calculated test of American resolve. And the Iranian regime, once again, misjudged how far it could push before triggering a response to match.

The return of volatility on oil markets

The collapse of the June memorandum immediately made itself felt on global oil markets. Risk premiums applied to shipping in the Persian Gulf spiked as soon as the first news of attacks on commercial vessels broke, reflecting operators' nervousness at the possible return of the chaos that preceded the mid-June agreement. This volatility shows just how much global economic stability remains hostage to diplomatic developments in such an unstable region.

Oil companies and shipowners, who had begun reorganizing their routes in anticipation of a lasting normalization of traffic in the strait, now find themselves forced to hastily revise their logistics plans. This chronic instability carries a direct cost, measured in higher insurance premiums and longer delivery times, which ultimately trickles down to prices Western consumers pay at the pump.

A blow to the credibility of economic diplomacy

Beyond the immediate market impact, this agreement's collapse deals a significant blow to the idea that economic diplomacy can durably stabilize major zones of strategic tension. The June memorandum had been presented, including by some Western analysts, as proof that well-calibrated economic incentives could push even a regime as rigid as Tehran's to moderate its behavior in a zone critical to its own commercial interests.

Its rapid collapse calls for a more cautious reassessment of that approach. Economic incentives, however powerful on paper, are not enough against a regime whose strategic calculations give greater priority to territorial control and regional power posture than to simple economic rationality. That is a lesson the architects of the next mediation attempt will need to absorb.

We wanted to believe money would speak louder than ideology in Tehran. This agreement's collapse shows, once again, that the Iranian regime places its strategic posture well above rational economic considerations, even when doing so directly hurts its own commercial interests.

A response proportionate to the severity of the violation

Faced with Iranian attacks on commercial vessels, the Trump administration responded with strikes on more than 80 Iranian targets, a response whose scale reflects Washington's will not to let the violation of the memorandum go without serious consequence. This firmness, though it carries risks of uncontrolled escalation, sends a clear strategic message: the United States will not tolerate Iran using threats against commercial shipping as a permanent bargaining chip.

This military response must be judged fairly: it aims to restore deterrence rather than pursue endless escalation. By striking hard and fast after the Iranian attacks, the American administration seeks to restore the credibility of its commitment to protect freedom of navigation in the strait, a commitment that had been implicitly called into question by the initial lifting of the naval blockade under the memorandum.

The dilemma between firmness and renewed negotiation

This sequence poses a classic strategic dilemma for Washington: how to reconcile a firm military response, necessary to deter future provocations, with the need to preserve an open door to new negotiations that could, eventually, lead to a lasting stabilization of the Strait of Hormuz? Too much firmness risks permanently closing off any chance of dialogue; too much restraint risks encouraging new Iranian provocations.

It is within this tension that the future of the Strait of Hormuz crisis is actually being decided. The editorial line that regards Trump as a necessary evil on the geopolitical front finds, once again, empirical justification here: his firmness toward Iran, though risky, responds to a clearly documented provocation and aims to protect a major collective Western interest — freedom of navigation in a shipping lane critical to the global economy.

I prefer an America that strikes hard after a documented provocation over an America that gives free rein to a regime relentlessly testing the limits of Western patience. Firmness, here, is not escalation for its own sake — it is necessary deterrence.

Rethinking verification mechanisms

If a new mediation attempt becomes possible between Washington and Tehran, it will need to build in far more robust verification mechanisms than those provided for in the mid-June memorandum. An agreement based mainly on the good faith of the parties, without any independent monitoring system or automatic consequences for violations, has proven structurally incapable of withstanding the very first temptation of provocation from the Iranian side.

The Pakistani and Qatari mediators, if they wish to preserve their diplomatic credibility for future negotiations, would do well to push for the inclusion of such verification clauses in any subsequent agreement. This could include a neutral international maritime presence, rapid incident-reporting mechanisms, or automatic suspension clauses for American concessions in the event of a confirmed violation by Tehran.

Not repeating the mistakes of excessive optimism

This sequence also underscores the importance of never giving in to excessive diplomatic optimism toward a regime whose track record of honoring international agreements remains, at best, mixed. Celebrating a memorandum as a definitive victory, as happened in June, sets up an even more painful disappointment when the agreement collapses weeks later.

Going forward, a more measured approach would treat every agreement with Tehran as a provisional step, to be continually validated by concrete proof of compliance on the ground, rather than as a final point that durably resolves the crisis. That permanent vigilance, rather than a priori trust, must now guide Western diplomacy toward Iran.

Diplomacy is not naivety. One can negotiate with Tehran while keeping eyes wide open to its tendency to violate its commitments the moment an opportunity arises. That balance between dialogue and vigilance is exactly what the next attempt must find.

A crisis that dates back to the strait's initial closure

To properly gauge the fragility of the mid-June memorandum, one must remember that Iran's closure of the Strait of Hormuz dates back to late February 2026, in the wake of American and Israeli strikes against Iranian territory. Since that date, the strait has gone through several cycles of partial closure, tentative resumption of traffic, then renewed closure, with no agreement managing to establish lasting stability. The June memorandum represented the most serious attempt to break this infernal cycle, and its failure confirms just how much the region remains a prisoner of a logic of permanent confrontation.

Between February and June, maritime traffic in the strait went through phases of near-total standstill, at times with only five ships managing to cross in a day, compared to several dozen in normal times. This chronic instability imposed considerable economic costs on all commercial players dependent on this shipping route, adding to the diplomatic pressure to find a lasting agreement — pressure that partly explains the haste with which the June memorandum was celebrated as a victory, perhaps prematurely.

The trap of premature celebration

This sequence reveals a recurring trap in the media and diplomatic coverage of Middle East crises: the temptation to celebrate every lull as a definitive resolution, when recent history should have counseled far greater caution. The June memorandum was presented by some commentators as the end of the Strait of Hormuz crisis, when it represented, at best, only a pause in a structurally unresolved conflict.

This tendency toward premature celebration is not trivial: it shapes the political and economic expectations of the players involved, from oil markets to Western chancelleries, who sometimes build entire strategies on the assumption of a stability that does not yet actually exist. Correcting this media and diplomatic reflex will be essential to better managing the next phases of this persistent crisis.

I have seen too many ceasefires celebrated as final victories to not remain skeptical of every new diplomatic announcement concerning Iran. The June memorandum was a good step. Presenting it as a definitive resolution was, from the start, an optimism that recent history did not justify.

What the June memorandum still proved

Despite its collapse, the mid-June memorandum was not useless. It demonstrated that a negotiated de-escalation, even imperfect and temporary, remains possible between Washington and Tehran when credible regional mediators fully commit to it. This proof of concept, even a partial one, provides a foundation on which future attempts to stabilize the Strait of Hormuz can build, provided the right lessons are drawn from the structural flaws of the initial agreement.

Pakistan and Qatar proved their ability to move a file forward that traditional Western powers had failed to unblock through their own diplomatic channels. This regional mediation capacity remains a valuable asset for the future, even if its first test proved disappointing against Iran's determination to test the limits of any signed agreement.

Vigilance as the only lasting guarantee

What remains certain, at the end of this episode, is that the stability of the Strait of Hormuz can never rest on the signing of an agreement alone, however carefully negotiated. It will require permanent vigilance, constant Western firmness against provocations, and a clear will to make every violation carry a real cost, as demonstrated by the massive American response to the early-July Iranian attacks.

The story of this memorandum, from its triumphant signing to its rapid collapse, will remain a case study for anyone studying diplomacy toward regimes that assign only tactical, not strategic, value to the international agreements they sign.

I still hold on to a shred of hope in the fact that an agreement could be negotiated in just 60 days. But that hope must now come paired with lucid realism: with Tehran, every agreement is only a round, never a conclusion.

By Maxime Marquette, columnist

Editorial stance

I am not a journalist but a columnist and analyst. My expertise lies in observing and analysing the geopolitical, economic and strategic dynamics that shape our world. My work is to take political strategies apart, to understand global economic movements, to put the decisions of international actors in context and to offer analytical perspectives on the changes that are redefining our societies.

I do not claim the cold objectivity of traditional journalism, which stops at reporting facts. I claim analytical clarity, rigorous interpretation and a deep understanding of the complex issues that concern us all. My role is to give meaning to the facts, to place them in their historical and strategic context, and to offer a critical reading of events.

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