2026 Strait of Hormuz crisis facts for kids
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| Date | 28 February 2026 – present (5 months and 4 days) |
|---|---|
| Location | Strait of Hormuz, Persian Gulf, and Gulf of Oman |
| Cause | 2026 US–Israeli attacks on Iran |
| Participants | Iran (IRGC Navy 1st "Saheb-az-Zaman" Naval Zone), United States, Israel, and shipping companies |
| Outcome |
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| Deaths | 15 seafarers 1 port worker |
| Non-fatal injuries | 10 |
The Strait of Hormuz is a very important waterway for global trade, especially for oil and natural gas. Since February 28, 2026, shipping traffic through this strait has been largely blocked by Iran. This happened after the United States and Israel began a conflict against Iran. In response, the Iranian Revolutionary Guard Corps (IRGC) warned ships not to pass, boarded and attacked merchant vessels, and placed sea mines in the strait.
From April 13 to May 29, 2026, the US also blockaded Iranian ports. Before this conflict, about 25% of the world's oil transported by sea and 20% of the world's liquefied natural gas (LNG) passed through the Strait of Hormuz.
Soon after the conflict began, the number of tanker ships passing through dropped almost completely. On March 27, the IRGC announced that the strait was closed to any ships traveling "to and from" ports in the US, Israel, and their allies. The International Maritime Organization reported on April 21 that about 20,000 sailors and 2,000 ships were stuck in the Persian Gulf because of the closure. This situation caused oil prices to rise faster than during any other recent conflict. For example, Brent crude oil prices went above US$100 per barrel on March 8 for the first time in four years, reaching US$126 per barrel at their highest. The closure of the strait became the biggest disruption to world energy supply since the 1970s energy crisis. Other goods like aluminum, fertilizer, and helium also faced supply problems and price increases.
In late March and early April, US president Donald Trump issued strong warnings to Iran about potential consequences if the Strait remained closed. On April 8, a temporary ceasefire was agreed upon, which was supposed to include reopening the strait. However, after talks failed, the US Navy began to blockade Iranian ports from April 13. This was described as a "dual blockade," with the US blocking Iran and Iran blocking the Gulf. On April 17, Iran announced it would allow commercial shipping due to a ceasefire agreement between Israel and Lebanon, but the US continued its blockade, and Iran reimposed restrictions. On May 4, President Trump launched Operation Project Freedom, a US Navy mission to escort merchant ships out of the Gulf. Iran warned this would violate the ceasefire, and on May 6, Trump paused the operation, citing "great progress" toward a possible agreement.
On June 17, President Trump and Iranian president Masoud Pezeshkian signed a memorandum of understanding to end the conflict and the blockades. On June 19, Trump announced a renewed ceasefire between Israel and Hezbollah. However, Israel continued actions in southern Lebanon. The next day, Iran said it closed the strait again, claiming Israel's actions violated the agreement, which the US military denied. On June 27, the Joint Maritime Information Center (JMIC), overseen by the US Navy, announced a wider route through the Strait of Hormuz near Oman. This allowed more naval traffic and challenged Iran's control over the waterway. On July 8, the temporary truce between the US and Iran broke down after Iran allegedly attacked multiple commercial ships in the Strait of Hormuz.
Contents
Understanding the Strait of Hormuz
Why the Strait is Important for Oil Trade
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The Strait of Hormuz is a narrow passage, only about 34 kilometers (21 miles) wide at its smallest point. It connects Iran and Oman. This waterway allows about 20 million barrels of oil to pass through each day. This is roughly 20% of all the oil transported by sea worldwide. Most of this oil comes from countries like Saudi Arabia, the United Arab Emirates, Iraq, and Qatar.
In 2024, about 84% of the oil and other fuels shipped through the strait went to Asian markets. For example, China received one-third of its oil through this strait. Europe also gets 12% to 14% of its liquefied natural gas (LNG) from Qatar, which passes through the strait.
The Persian Gulf area is also a major center for making and exporting fertilizers. In the 2020s, this region produced about 30% to 35% of the world's urea exports and 20% to 30% of ammonia exports. Overall, up to 30% of internationally traded fertilizers usually travel through the Strait of Hormuz.
Past Tensions in the Region
There have been tensions between Iran and the United States before, leading to events like Operation Praying Mantis in 1988 and disputes in 2011–2012 and 2019.
Tensions between Iran, the United States, and Israel grew before 2026. This was due to failed nuclear talks and an earlier 12-day air conflict in 2025. Iran had hinted that it might disrupt the Strait of Hormuz if threatened. Before the attacks in February 2026, the cost of war-risk ship insurance for the strait increased significantly.
Before the February 2026 attacks, military leaders warned President Trump that an attack could cause Iran to close the strait. Trump acknowledged these warnings but believed Iran would not close it, or that the US military could reopen it.
How the Conflict Escalated
On February 28, 2026, the United States and Israel launched coordinated airstrikes on Iran. These attacks, called Operation Epic Fury, targeted military sites and leadership, and a key leader was affected. Iran responded by firing missiles at Israeli cities and US bases in the Gulf, causing damage. The conflict also spread to Lebanon, where Hezbollah launched rockets into Israel, leading to Israeli counterstrikes.
On March 4, Iran announced that the Strait of Hormuz was "closed" and threatened to attack any ship trying to pass. They later made exceptions for ships from countries they considered "friends." By March 9, shipping insurance rates for the strait had increased four to six times. The US government began to help insurers, but still warned commercial ships to avoid the area. On the same day, President Trump stated that the strait was open and that the US might take control of it. On March 27, he repeated his desire to control the strait and even suggested renaming it.
How Iran Blocked the Strait
Iran used several methods to restrict ships from passing through the strait:
- Attacks from small boats, missiles, and drones: These were used to directly threaten and keep ships away.
- Sea mines: Iran placed hidden mines, which are dangerous and unpredictable.
- Satellite signal interference: Satellite spoofing and GNSS jamming made it harder for ships to navigate safely.
These methods were easy for Iran to use and difficult for others to counter. They also made insurance costs for ships so high that most shipowners avoided the strait.
Impacts of the Crisis
Effects on Shipping Through the Strait
In late February, outgoing traffic was heavy, but incoming traffic was light. At least three tankers were hit near the strait. On March 1 and 2, almost no ships appeared in the strait. Major container shipping companies like Maersk and CMA CGM stopped using the strait. This also affected routes like the Red Sea, forcing ships to travel around Africa, adding weeks to travel times and increasing costs.
Cruise ships also reduced their activity, leaving 15,000 passengers stranded on at least six major cruise ships. On March 15, an Iranian commander said Iran would continue to use the Strait of Hormuz as a point of pressure. Some ships, mostly carrying petroleum for China and India, did manage to pass. Iran set up its own shipping channel north of Larak Island, and one ship paid $2 million to use it.
On April 9, despite a recent agreement, the Iranian blockade was still in effect. The CEO of Abu Dhabi National Oil Company said the strait was not fully open, and 230 loaded oil tankers were waiting inside the Gulf. Around April 18, during a brief period when both Iran and the US claimed the Strait was open, all six stranded cruise ships sailed out.
By April 20, traffic through the Strait had sharply dropped again. The International Maritime Organization reported on April 21 that about 20,000 sailors and 2,000 ships were still stranded. On May 11, the Saudi Aramco CEO said over 600 ships were stuck inside the Persian Gulf, and 240 more were waiting outside.
Impact on the Global Economy
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The restrictions on shipments, which reduced oil flow by more than 90%, caused energy and agricultural costs to rise worldwide. About 20% of the world's oil and LNG usually passes through the strait. The disruptions caused Brent crude prices to jump by 10–13% early on, with experts warning they could go even higher. This price increase was especially difficult for Asian countries like China and India. Natural gas prices in Europe also surged.
This crisis was described as the biggest disruption to energy supply since the 1970s oil crises. Analysts warned of continued high oil prices if the strait remained restricted. The disruptions also raised concerns about inflation and potential economic slowdowns in countries that import oil.
OPEC+ promised to increase oil production to help with shortages. Japan, which gets most of its oil from the Middle East through the strait, asked its government to release oil from reserves. Saudi Arabia and the UAE diverted some oil through pipelines to bypass the strait.
On March 3, Iraq began shutting down oil operations due to a lack of storage space, as tankers could not leave the strait. On March 6, Qatar's energy minister warned that other Gulf energy producers might have to stop exports if the conflict continued. By March 8, oil production in southern Iraq had dropped by 70%. By March 12, Gulf Arab states had cut their production by at least 10 million barrels per day. On March 13, Saudi Arabia reduced its oil production by 20%.
On March 8, crude oil prices went above US$100 per barrel for the first time in four years. This price surge was faster than during other conflicts. On March 11, 32 International Energy Agency member states agreed to release 400 million barrels of oil from their emergency reserves. By March 19, Dubai crude oil prices reached US$166, their highest ever. The largest monthly increase in oil prices happened in March 2026.
An analysis showed that the United States and Russia benefited most from the market changes, seeing increased exports and revenue. Persian Gulf nations generally saw declines in exports, though some that could bypass the strait saw revenue increases.
European Energy Market
The crisis led to increased European imports of Russian liquefied natural gas (LNG). Between January and April 2026, the European Union imported a record volume of Yamal LNG from the Russian Arctic. This highlighted Europe's continued reliance on Russian LNG despite efforts to reduce imports after the Russian invasion of Ukraine.
Impact on Industries
The US defense industry faced disruptions in critical minerals like sulfur. China banned sulfur exports, affecting industries like copper production in Chile. Aluminum prices increased slightly. About one-third of the world's helium production was affected, leading to rationing of deliveries.
The Gulf region also produces nearly half of the world's urea and 30% of ammonia, which are key fertilizer ingredients. Urea prices increased by 50% by late March 2026. This shortage during the spring planting season could reduce crop yields and potentially increase global food prices into 2027.
International Law and the Strait
Some experts believe that closing the Strait of Hormuz violates international law. According to Majid Rafizadeh, Iran is going against the United Nations Convention on the Law of the Sea (UNCLOS). However, Iran has signed but not officially approved this treaty, so it doesn't legally apply to Iran. Placing sea mines in the strait is also seen as a violation of sea laws.
UNCLOS rules for "innocent passage" through territorial waters mean countries cannot charge fees for ships passing through, unless they provide specific services. However, UNCLOS also allows countries to set their territorial sea limits up to 12 nautical miles.
Iran's New Definition of the Strait
In May 2026, the Islamic Revolutionary Guard Corps Navy announced that Iran had redefined the Strait of Hormuz. Officials described it as a "vast operational area," no longer just the narrow passage around Hormuz and Hengam islands. Instead, it was seen as a broader strategic zone stretching from the Iranian port city of Jask to Siri Island.
Failed Attempts to Reopen the Strait
On April 17, Iran's foreign minister Abbas Araghchi announced that the Strait of Hormuz was open to all shipping traffic. Iran said it would stay open during the ceasefire in Lebanon. After this announcement, oil prices dropped sharply. However, commercial traffic was not expected to return to normal immediately. Shortly after, President Trump stated that the strait was open, but the US naval blockade would remain until negotiations with Iran were finished. On April 18, Iran said it closed the Strait of Hormuz again because the US refused to lift its naval blockade.
See also
In Spanish: Crisis del estrecho de Ormuz de 2026 para niños
