Why the Strait of Hormuz closure in 2026 to push oil prices sky-high

Last Updated on 5 days ago by TodayWhy Editorial

The Strait of Hormuz — a narrow waterway between Iran and Oman — is one of the world’s most critical energy chokepoints. Normally, it carries about 20-30% of global seaborne oil trade and a similar share of liquefied natural gas (LNG). But since early March 2026, amid the escalating US-Israel-Iran war, Iran has effectively closed the strait to most commercial traffic, triggering massive disruptions.

Why has the Strait of Hormuz become a flashpoint in 2026? Here’s the full breakdown of the causes, Iran’s motivations, the economic fallout, and what could happen next.

June 2026 Update: Where Things Stand Now

Three months after Iran’s initial closure of the Strait of Hormuz, the waterway remains one of the most dangerous and contested stretches of ocean on earth — but the situation has evolved in ways that few analysts predicted in March. A fragile ceasefire is technically in force, a 40-nation coalition is preparing to reopen the Strait once fighting ends, and oil prices have swung wildly between $86 and $114 per barrel. Yet as of early June, Iran is still firing drones at the Strait, and a final deal remains elusive.

Here is what has happened since March 2026 — and what it means for global energy markets.


The April 8 Ceasefire: Relief That Didn’t Last

The most consequential development since March was the Pakistan-brokered ceasefire announced on April 8, 2026. Under the agreement, both sides halted offensive operations and Iran agreed to allow limited “safe passage” through the Strait of Hormuz under coordination with Iranian Armed Forces. Global markets responded immediately: Brent crude fell nearly 16% to approximately $92/barrel within hours of the announcement — the single largest one-day price drop since the crisis began.

The ceasefire was then extended indefinitely, though its terms were disputed almost from the start. Iran’s Supreme National Security Council claimed a “historic victory,” while Trump declared the US had already achieved its military objectives. Both sides, in other words, announced they had won — a classic but fragile foundation for a truce.

For deeper context on why Pakistan became the unexpected mediator in this conflict, see our full analysis: Why Is Pakistan Involved in the 2026 Iran War as Peace Broker?


The US Naval Blockade of Iran: A Counter-Blockade

When the Islamabad Talks of April 11–12 — the first direct US-Iran diplomatic engagement since 1979 — collapsed without agreement on the Strait or the nuclear program, President Trump announced a US naval blockade of Iranian ports on April 13, 2026. This created an extraordinary “dual blockade” situation: Iran was still interdicting commercial traffic through the Strait, while the US Navy was preventing ships from entering or leaving Iranian ports entirely.

The dual blockade brought regional maritime commerce to a near standstill, exacerbating the oil supply crisis and deepening economic pressure on Iran. According to Lloyd’s List, Iran’s crude exports fell 84% in May compared to the previous month as US pressure on Tehran’s shipping networks intensified.

For a full account of the diplomacy behind the ceasefire and blockade, read our comprehensive guide: Why US-Iran Negotiations 2026: Causes, Timeline, Key Issues & Latest Updates


The 40-Nation Coalition: Ready to Reopen — After the War

One of the most significant diplomatic developments of April and May was the formation of a multinational coalition of over 40 countries committed to securing free passage through the Strait of Hormuz once a ceasefire is formally in place.

The coalition — known as the Multinational Military Mission (MMA) — is led by France and the United Kingdom. British Foreign Secretary Yvette Cooper hosted the inaugural virtual meeting in early April, declaring that Iran had “hijacked an international shipping route to hold the global economy hostage.” The coalition includes nations from across Asia, Europe, the Americas, and the Gulf, reflecting the truly global economic impact of the Strait’s closure.

Critically, the coalition is designed to follow a ceasefire, not force one. As Breaking Defense reported in May, the MMA’s assets — including UK Royal Navy destroyers, Eurofighter combat aircraft, and unmanned systems — are pre-positioning but will only deploy once both sides agree to a formal end to hostilities. The UK’s HMS Dragon Type 45 destroyer has already departed for the Eastern Mediterranean in preparation.

Source: Breaking Defense — How a Europe-Led Coalition Aims to Open the Strait of Hormuz


June 2026: Drones, Strikes, and a Ceasefire Under Strain

As of the first week of June 2026, the ceasefire is technically holding — but barely. On June 5, 2026, US CENTCOM confirmed it had shot down four Iranian one-way attack drones launched toward the Strait of Hormuz, stating the drones “posed an immediate threat to regional maritime traffic.” US forces then struck Iranian coastal surveillance radar sites and a military ground control station on Qeshm Island in retaliation.

On June 6, Washington Post reported another exchange: Iran launched missiles and drones toward the Strait and neighboring Gulf states, with US forces shooting down the incoming threats. Bahrain reported Iran had continued to fire missiles and drones targeting civilian areas.

Iran, for its part, declared that its “patience has reached its limit” with what it described as continuous violations of the ceasefire by US and Israeli forces. The pattern — both sides firing while nominally observing a truce — has become the new normal.

Source: Washington Post — Iran Launched Missiles and Drones Toward Strait of Hormuz, US Military Says | The War Zone — US Shoots Down Iranian Drones


Updated Oil Price Tracker: From $114 to $93 and Back

Oil prices have told the story of this crisis in real time. Here is how the situation has evolved since this article was first published:

DateBrent Crude PriceDriver
Late February 2026~$72/barrel (pre-war)Baseline before US-Israel strikes
Early March 2026$100–$114/barrelIran closes Strait; tanker attacks begin
March 11, 2026$89.80/barrelReports of Trump considering military seizure of Strait
April 8, 2026~$92/barrel (−16% in one day)Pakistan-brokered ceasefire announced
Late May 2026~$93/barrelTrump claims deal “largely negotiated”; Iran disputes
June 7, 2026~$93/barrelConfident deal is near; new drone exchanges dampen optimism

Analysts at Rystad Energy have noted that OPEC+ production increase commitments mean very little while the Strait of Hormuz remains closed, warning that “when the Strait reopens, the market could move very quickly from fear of shortage to fear of surplus.” OPEC+ approved its fourth output quota hike in June, adding 188,000 barrels per day from July — but with Gulf exports still largely blocked, the impact remains theoretical.

Source: CNBC — OPEC+ Approves Fourth Oil Output Quota Hike Since Hormuz Closure


What Happens Next: Three Updated Scenarios

The three scenarios outlined in this article in March 2026 have been updated to reflect the current situation:

Scenario 1 — Peace deal and MMA deployment (most optimistic): A US-Iran memorandum of understanding is finalized in June or July 2026, covering the Strait, sanctions, and at least a framework for the nuclear question. The 40-nation MMA coalition deploys immediately, escorting commercial traffic through the Strait. Brent crude falls to the $65–$75 range within weeks of reopening. This scenario is now more plausible than it seemed in March, but remains contingent on the nuclear dispute being resolved or deferred.

Scenario 2 — Prolonged partial truce (base case): The ceasefire holds in name but continues to be violated, as it has been through May and June. Limited shipping dribbles through under Iranian-approved arrangements. Prices stabilize in the $88–$100 range but remain elevated. Negotiations continue for months. The 40-nation coalition waits. This appears to be the current trajectory.

Scenario 3 — Full resumption of hostilities (worst case): The ceasefire breaks down entirely following a major incident — a US strike on Iranian infrastructure or an Iranian attack on a US naval vessel. Iran remines the Strait aggressively. Oil surges past $130/barrel. Analysts at FGE NexantECA have warned that a full closure resumption could push Brent to $150–$200 per barrel, triggering a global stagflationary shock.

Source: Congressional Research Service — Iran Conflict and the Strait of Hormuz: Impacts on Oil, Gas, and Other Commodities

This article was originally published March 18, 2026 and last updated June 8, 2026. TodayWhy continues to monitor the situation. For the latest on US-Iran peace negotiations, see our full guide: Why US-Iran Negotiations 2026: Causes, Timeline, Key Issues & Latest Updates. For the role of Pakistan in brokering the peace process, see: Why Is Pakistan Involved in the 2026 Iran War as Peace Broker?

Video: Why the Strait of Hormuz Conflict Could Hit Wallets and Plates

Why Iran Closed the Strait of Hormuz

Iran’s actions stem directly from the US and Israeli military campaign that began on February 28, 2026, with strikes targeting Iranian leadership (including the killing of Supreme Leader Ayatollah Ali Khamenei) and infrastructure. In retaliation, Iran’s Revolutionary Guard Corps (IRGC) declared the strait closed starting around March 1-2, using threats of attacks, drone strikes, missiles, and possible mining to deter passage.

  • Strategic retaliation and leverage: Iran views the closure as asymmetric warfare — a way to inflict economic pain on the US, Israel, and their allies without direct confrontation on land. By disrupting global energy flows, Tehran aims to raise costs for the West, force diplomatic concessions, and demonstrate resilience despite heavy losses.
  • Selective enforcement: The strait isn’t hermetically sealed. Iran has allowed “approved” vessels (often carrying its own oil exports to Asia) to pass via negotiated safe corridors, hugging Iranian waters. This generates revenue for Iran’s war effort while punishing enemies. As Iran’s Foreign Minister stated, the strait is “open” but closed to “enemies” and their allies.
  • Historical playbook: Iran has threatened Hormuz closures before (e.g., during sanctions eras or 2019 tanker incidents), but 2026 marks the most severe implementation due to the direct war.

The result: A near-total halt for most global shipping, with only sporadic transits reported (e.g., a few bulkers and shadow fleet tankers in recent days).

Why Oil Prices Are Surging — And Why They Could Go Higher

The closure has created the largest oil supply disruption in modern history, according to the International Energy Agency (IEA). Key impacts include:

  • Supply shock: Around 15-20 million barrels per day of crude and products from Saudi Arabia, UAE, Iraq, Kuwait, and others are blocked or severely delayed. This equals roughly 15-20% of global demand.
  • Price volatility: Brent crude jumped 13%+ early in the crisis to highs near $82, then soared past $100 (with peaks toward $120 in volatile sessions). WTI followed suit. Even partial reopenings cause swings — prices dip briefly on “dribble” traffic news but spike on renewed threats.
  • Risk premium explosion: Traders demand huge premiums ($10-15+ per barrel) to cover war risks. Insurance costs for tankers have skyrocketed, and major carriers (Maersk, etc.) suspended passages.
  • Broader effects: Fertilizers, plastics, and LNG prices rise too. Global inflation fears mount, with potential recession risks if prolonged.

Analysts warn: A full-month closure could push prices to $120-150/barrel or beyond, echoing the 1973 oil shock but on steroids.

What Happens If the Strait Stays Closed? Three Scenarios

  1. Short-term dribble and de-escalation (most optimistic): Shadow fleets and selective passages increase slightly; Iran’s arsenal weakens from Israeli/US strikes → quiet reopening via back channels (Oman/Qatar). Prices stabilize around $90-110.
  2. Prolonged crisis (base case): Iran maintains selective closure for weeks/months → supply shortages persist, prices average $100+ through 2026. Global recession risks rise; Asia (heavy importers) suffers most.
  3. Full escalation (worst case): Iran mines or attacks more aggressively → complete blockade. Oil hits $150+, triggering energy crisis, inflation spikes, and potential wider conflict.

Recent signs (March 17-18): Some tankers “dribbling through,” per White House comments, hint at slight easing — but threats continue.

Video: A US-led Coalition to Re-open Strait of Hormuz Will Be Effective, Symbolic: Panel

The Bottom Line: Why This Matters to You

The Strait of Hormuz closure isn’t just a Middle East story — it’s a global economic weapon. Higher oil means pricier gas, transportation, goods, and energy bills worldwide. For importers, it could fuel inflation and slow growth.

As the war enters its third week, the strait’s status remains the single biggest driver of energy markets. Cooler heads (or military pressure) may prevail, but until then, expect volatility.

Stay updated on todaywhy.com for more “Why” breakdowns on this fast-moving crisis. What do you think — will allies step in, or is this the new normal for global oil?

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