DECODING: Hormuz reopened: what the deal changes for global energy

DECODING: Hormuz reopened: what the deal changes for global energy

Introduction: the world breathes — but holds its breath

The strait that rattled markets

For months — since the outbreak of war between the United States, Israel, and Iran in February 2026 — the world had lived under the permanent threat of a total or partial closure of the Strait of Hormuz. This passage, only 33 kilometres wide at its narrowest point, lying between the Sultanate of Oman and Iran, is the jugular vein of the world energy economy: roughly 20% of global trade in oil and liquefied natural gas (LNG) passes through it every day. Block it, and you simultaneously hurt Europe, Japan, China, South Korea, and much of the global economy.

The signing of the memorandum of understanding (MoU) between the United States and Iran on June 14, 2026 changed that equation — for now. The first tankers resumed navigation on June 15. In the week of June 15–21, 125 transits were recorded — the highest level since the war began. A massive relief for global energy buyers. But that relief remains fragile, conditional, and freighted with fundamental questions about the durability of this unblocking.

The essential terms for global energy

The agreement provides that Iran guarantees the free transit of commercial vessels through the Strait of Hormuz. In exchange, the United States suspended its sanctions on Iranian oil transactions for an initial period of 60 days, effective June 18, 2026. The US Treasury confirmed the suspension. According to reporting by the Washington Post, Iran can now sell its oil freely, without restrictions, as long as the terms of the deal are respected. Approximately $300 billion in reconstruction was also discussed in the context of the deal's long-term prospects.

This combination — strait reopening plus sanctions exemption — represents a potentially significant supply shock on energy markets. Iran holds proven reserves of 157 billion barrels of oil and vast natural gas reserves. Before sanctions, it exported up to 2.5 million barrels per day. Even a partial return to those levels represents a meaningful addition to global supply.

The immediate impact on oil markets

The price drop: good news and bad news

The reopening of Hormuz triggered an immediate drop in oil prices. Markets had built in a substantial geopolitical risk premium during the closure — prices had reached very elevated levels, putting pressure on oil-importing economies. The reopening released that pressure. For European and Asian consumers, for airlines, for manufacturing industries: this is direct good news.

But this price decline is bad news for producer countries that depend on high oil revenues — particularly Russia, whose Urals crude was already capped at $44.10 per barrel under the 21st EU sanctions package. The more Iranian oil returns to market, the lower global prices go, and the tighter Moscow's fiscal room becomes. On this specific point, the US-Iran deal carries an indirect benefit for Ukraine.

The 35 million stored barrels: the flush effect

During the months of closure, tankers had been waiting in the Persian Gulf. According to Kpler data, at least 20 tankers carrying 35 million barrels had cleared the strait in the days following the signing. This "flush" of stored oil created additional short-term downward pressure on markets. Verified oil flow through Hormuz reached roughly 4.8 million barrels per day — the highest level since the war began, according to Kpler.

These released stockpiles represented both an immediate commercial opportunity for tanker operators and a measure of the scale of the energy flow disruption caused by months of closure. Asian refineries that had been running at reduced capacity were able to restock. Futures contracts on LNG bound for Japan, South Korea, and Taiwan could be honoured.

LNG and Europe: a particularly acute stake

Europe's dependence on Gulf LNG

The closure of Hormuz hit Europe harder than initially expected. Since reducing Russian gas imports following the invasion of Ukraine in 2022, Europe had diversified its LNG supply sources — turning notably to Qatar, the United Arab Emirates, and other Persian Gulf producers. But all of those exporters use the Strait of Hormuz for their deliveries. The strait's closure had therefore indirectly reinforced Europe's residual dependence on Russian energy — a painful strategic paradox.

The reopening of the strait corrects that situation. European LNG prices pulled back. Natural gas storage levels, which had been drawn down earlier than expected, could be rebuilt at more reasonable cost. For countries like Germany, France, and the Netherlands — which had hurriedly developed LNG receiving capacity since 2022 — the reopening of Hormuz was a direct economic priority.

Taiwan and northeast Asia: vital relief

Taiwan imports 98% of its oil and depends heavily on LNG for electricity generation. The closure of Hormuz had posed a direct existential threat to the island — all the more so given that this threat was compounding growing Chinese military pressure. Taiwan's prime minister had been forced to announce in June 2026 that LNG prices for residential and electricity use would not rise until August — a promise that would have been impossible to keep without the strait's reopening.

Japan and South Korea, both heavily dependent on energy imports through the Persian Gulf, had suffered similar disruptions. For these advanced economies, the reopening of Hormuz was a direct economic and industrial imperative: factories, transport, power grids — everything depended on the resumption of flows.

The fragility of the rebound: residual risks

The June 26 incident: a revealing disruption

The fragility of the deal manifested almost immediately. On June 26, 2026, an attack on a cargo vessel in waters near Hormuz cast doubt on the security of the passage, according to CNBC. The incident briefly halted a United Nations evacuation plan and prompted some tankers to turn back. The episode illustrates the precarious balance of the situation: a single attack, a single incident, can undermine operator confidence in the safety of the passage.

The regional context remains volatile. Armed groups active in the area — Houthis in Yemen, pro-Iranian militias in Iraq, factions not under Tehran's direct control — could disrupt traffic independently of the Iranian government's willingness to honour the deal. An agreement signed with political officials does not guarantee the behaviour of every military actor in the region.

The 60-day deadline and its uncertainties

The deal is structurally fragile because it rests on a temporary 60-day sanctions suspension — during which the two parties must negotiate the terms of a final agreement. That window is extremely tight for resolving questions as complex as the Iranian nuclear file, the inspections question, verification mechanisms, and the long-term outlook for sanctions. The risk of the technical negotiations failing within that deadline is real — and if it happens, the sanctions suspension would lapse, potentially calling the entire normalization of traffic through Hormuz back into question.

Markets have taken note of this uncertainty. Despite the short-term price decline, oil traders are hesitant to commit to long-term low-price contracts in the region, maintaining a structural risk premium. That professional caution is justified by recent history: the region has already seen sudden escalations after periods of calm.

Iran, OPEC, and the long-term global market

Iran's return to OPEC: what are the implications?

A durable return of Iran to the global oil market would reshape the OPEC+ balance. Saudi Arabia and the UAE, the cartel's main producers, have maintained a policy of coordinated production cuts with Russia to support prices. An Iran exporting at full capacity — up to 2.5 million barrels per day by its own estimates — creates competitive pressure within the cartel and makes coordinated cuts harder to sustain.

This dynamic could benefit global consumers — lower prices — but it also erodes the revenues of Gulf producers who need a minimum price to balance their national budgets. For Saudi Arabia, which generally puts its fiscal break-even around $80–90 per barrel, a massive influx of Iranian oil at lower levels poses a structural problem.

Russian oil on the global chessboard

The impact on the Russian oil market cuts both ways. On one hand, increased competition from Iranian oil pushes global prices down, reducing Moscow's revenues. On the other, if Iran and Russia maintain their economic cooperation, Tehran could theoretically help Moscow circumvent certain sanctions — by serving as a commercial intermediary or absorbing transactions that can no longer be conducted directly with Russia. This is a concern that Western intelligence services are watching closely.

Putin had moreover extended until end of 2027 his ban on Russian companies selling oil to buyers honouring the Western price cap — a measure aimed at maintaining revenues by redirecting sales toward Asia. The post-Iran-deal dynamic complicates that calculation, but does not undo it.

The scenarios for the next 60 days

Scenario 1: a successful final deal

In this scenario, the technical negotiations between Washington and Tehran succeed within the 60-day window. IAEA inspectors gain access to Iranian nuclear sites. Iran formally commits — within a verifiable framework — to not developing nuclear weapons. Sanctions are lifted gradually and conditionally. The Strait of Hormuz remains open. Energy prices stabilize at levels manageable for global economies. This is the best scenario — and also the hardest to reach.

For this scenario to materialize, Iran would need to accept robust nuclear verification mechanisms, the United States would need to make a credible commitment to lasting sanctions relief, and both parties would need to overcome decades of mutual distrust in under two months. It is possible — but it would be a diplomatic achievement without recent precedent.

Scenario 2: deadlock and a return to tension

In this scenario — unfortunately the more likely one, according to analysts cited by Le Monde — the technical negotiations do not succeed within the 60-day window. The parties trade blame for the failure. The sanctions suspension lapses. Iran threatens to reduce traffic through Hormuz again. Energy markets slide back into uncertainty. Prices climb. The reprieve effect evaporates.

This scenario would be a disaster for all parties — including Iran, whose own economy suffers from the disruptions caused by sanctions. But the history of US-Iranian negotiations is dotted with exactly these recurring deadlocks. Vigilance is warranted.

Gulf producer states: winners or losers from the strait's reopening?

Saudi Arabia facing a production dilemma

The reopening of the Strait of Hormuz puts Persian Gulf producer states in an ambivalent position. On one side, the end of the risk of export disruptions is excellent news for their logistics. On the other, the return of Iranian oil to markets — a direct consequence of the US-Iran deal — puts downward pressure on prices, reducing per-barrel revenues for all OPEC+ members. Riyadh thus finds itself simultaneously relieved by the strait's stabilization and confronted with a potentially awkward Iranian partner in quota management.

Saudi Arabia responded by maintaining a wait-and-see posture, declining to comment publicly on the deal in any substantive way. Behind closed doors, Saudi officials reportedly expressed concerns about the pace of the US-Iranian rapprochement, which shifts the dynamics of their own relationship with Washington. If Iran becomes a reliable US partner again, the strategic weight of Riyadh in American regional policy is mechanically reduced — a prospect the Al Saud cannot ignore.

The UAE and Qatar: two diverging strategies

The United Arab Emirates have pursued a strategy of diversifying export routes that makes them partly less dependent on the Strait of Hormuz. The Abu Dhabi Crude Oil Pipeline, linking Abu Dhabi's oil fields to the Fujairah terminal on the Arabian Sea, bypasses the strait and has a capacity of roughly 1.5 million barrels per day. This infrastructure was designed precisely to reduce Emirati vulnerability to potential strait closures.

Qatar, for its part, exports primarily liquefied natural gas rather than crude oil. Its dependence on the Strait of Hormuz is therefore different — and its stakes in strait stability are particularly high. Doha welcomed the US-Iranian normalization, seeing in it an opportunity to reduce regional tensions that complicate its own relations with Tehran. Qatari diplomacy, known for its back-channel role, did in fact play a part in certain phases of the US-Iranian negotiations.

The energy transition and Hormuz: when black gold meets the green revolution

An oil crisis could have accelerated the transition — or paralysed it

The Hormuz crisis was a reminder of a reality that energy transition advocates do not always like to acknowledge: the world remains deeply dependent on Middle Eastern hydrocarbons, and that dependence will not disappear for several decades, even in the most ambitious renewable deployment scenarios. In 2026, fossil fuels still account for roughly 80% of the global energy mix. A supply shock of this scale would have had devastating consequences for economies that have not yet completed their transition.

Paradoxically, some economists and energy strategists argue that a prolonged oil crisis could have massively accelerated investment in alternatives. Prices at $150 or $200 per barrel would have made economically attractive some renewable energy projects that are currently only just at the break-even threshold. But that reasoning ignores the real economic suffering that such a crisis would have caused — particularly in developing countries, which are most dependent on hydrocarbon imports and least equipped for a rapid transition.

Europe between relief and a hard look in the mirror

For Europe, the reopening of the Strait of Hormuz is major relief. After the gas price shock of 2022 linked to the war in Ukraine, a second energy shock linked to Hormuz's closure would have represented an unprecedented double threat to the continent's economic stability. European industries — chemicals, steel, glass, ceramics — depend directly on stable energy prices to remain competitive against American and Asian players who enjoy structural cost advantages in energy.

But that relief should not extinguish the wake-up call. The Hormuz crisis was a warning: European energy security remains fragile, geopolitically exposed, insufficiently diversified. Investments in renewable energy, storage, energy efficiency, and supplier diversification are not ideological options — they are strategic necessities. The Europe that learned the lesson of Russian gas must now draw the lesson of Hormuz: every concentrated dependency is a strategic vulnerability.

Conclusion: a reopened strait, an open global question

The strait as a mirror of global geopolitics

The Strait of Hormuz is not merely a maritime passage — it is a mirror of the world's condition. Its closure for months revealed the vulnerability of the global economy to a single geographic transit point. Its reopening reveals the necessity of an international order in which no state can unilaterally hold such a chokehold over the vital flows of the global economy.

What the US-Iran deal changes — and what it doesn't

The deal changes short-term oil flows, and that is a good thing. It does not fundamentally alter Iran's nuclear intentions. It does not resolve the question of Iranian drones in Russia. It does not guarantee long-term stability of the passage. These are reasons to remain vigilant — and to insist that the 60 days of technical negotiation produce a serious, verifiable agreement.

By Maxime Marquette, columnist

Columnist's transparency note

Positioning and method

This article is grounded in open sources dated June 2026, primarily CNBC, Bloomberg/World Oil, Washington Post, Al Jazeera, Washington Times, and Le Monde. I favour a durable reopening of the strait that does not compromise the nuclear verification of Iran. That position informs my analytical balance.

Uncertainties in this article

I do not have access to the full, certified text of the US-Iranian MoU — only to versions published or summarized by media outlets. The data on oil flows come from Kpler, a private commercial tracking service. Long-term estimates of the impact of Iran's return to the market are inherently uncertain.

Sources

Primary sources

CNBC — 35 million barrels have left Hormuz since the US-Iran deal — June 24, 2026

CNBC — Shipping traffic rebounds in Hormuz, but confidence remains fragile — June 26, 2026

Washington Post — Iran reopens Hormuz and can freely sell its oil — June 17, 2026

World Oil/Bloomberg — US and Iran strike deal to reopen the Strait of Hormuz — June 14, 2026

Secondary sources

CNBC — Vance: the Iran deal is "very general" — June 15, 2026

Al Jazeera — IAEA demands "very strong" verification of Iran's nuclear programme — June 26, 2026

Le Monde — Vance tasked with defending Trump's Iran deal — June 19, 2026