Imagine a narrow waterway so vital that a single disruption can send fuel prices soaring across the globe. That is the Strait of Hormuz, a 33-kilometre-wide channel connecting the Persian Gulf to the Gulf of Oman, through which about one-fifth of the world's oil passes each day. In June 2026, the strait became the flashpoint for a dramatic escalation between the United States and Iran, with each side striking military and civilian targets in a cycle of attacks that has revived fears of a full-blown conflict.
The basics are stark. The US military launched what it called "self-defence strikes" against Iran on Wednesday, followed by a second wave the same day. US Central Command said the attacks were in response to "Iran's unwarranted and continued aggression". Hours earlier, an American Apache helicopter was downed in the Strait of Hormuz, an attack blamed on Iran. Iran's Islamic Revolutionary Guards Corps (IRGC) responded by launching strikes against 18 US targets in Kuwait and Bahrain, including the Ali Al-Salem and Ahmad Al-Jaber air bases in Kuwait and Sheikh Isa Air Base in Bahrain. Iranian state media then reported that the IRGC had struck two ships in the Strait of Hormuz and that the channel was "completely closed to all type of vessel". US Central Command countered that commercial ships were still transiting. The conflicting claims fuelled a 2% jump in Brent crude oil prices, pushing them above $95 a barrel.
“An explainer on the Iran-US conflict and the Strait of Hormuz's strategic importance.”
This is not a new fight. The US and Iran agreed a fragile ceasefire in April 2026, initially meant to last two weeks. Since then, both sides have exchanged intermittent fire without returning to full-scale hostilities, but recent efforts to broker negotiations have stalled. US President Donald Trump said on Truth Social that Iran's leaders had "taken too long to negotiate a deal" and that the US would hit them "hard" and "again today". Iran's president Masoud Pezeshkian said Iran "will stand firm against any pressure or threat". The Iranian foreign ministry accused the US of "damaging the diplomatic process through the contradictory messages it sends". US Defence Secretary Pete Hegseth warned that bombs would be "dropping on key facilities in Iran". The UN Secretary General António Guterres said the Middle East was "being pulled deeper into crisis" and that the ceasefire was "more like a lesser-fire".
For UK readers, the stakes are direct and practical. Britain imports roughly 10% of its crude oil from the Middle East, and any disruption in the Strait of Hormuz immediately affects petrol prices at the pump. The UK also has military bases in the region—including in Bahrain, where sirens sounded after Iran's paramilitary announced strikes. British officials have long emphasised the importance of freedom of navigation in the strait. If the conflict escalates further, UK consumers could face higher energy bills, and the government may be drawn into diplomatic or military responses alongside its allies.
Q: Why is the Strait of Hormuz so important? The strait is a narrow passage through which about a fifth of the world's oil passes daily. Any closure or threat of closure causes oil prices to spike, affecting global markets and directly hitting consumers at the petrol pump.
Q: How did the current escalation start? A US Apache helicopter was downed in the Strait of Hormuz on Tuesday, an attack the US blamed on Iran. The US responded with airstrikes, Iran retaliated against US bases in Kuwait and Bahrain, and the two sides have since exchanged multiple waves of strikes.
Q: Is the Strait of Hormuz actually closed? Iranian state media claimed the strait was "completely closed to all type of vessel", but US Central Command said commercial ships were still transiting normally. The conflicting reports make the true situation unclear, but any uncertainty itself rattles oil markets.
What happens next is uncertain. Trump has demanded a peace deal and threatened to attack "very hard" if one is not reached soon. Iran has vowed a "crushing and decisive" response to any US aggression. The US has fired at least 49 Tomahawk missiles at Iran, according to Trump, and two residents in the city of Kargan in Hormozgan province were injured by shrapnel from the latest strikes. Diplomatic efforts appear stalled, and both sides continue to trade blows. The world is watching to see whether this latest escalation leads to a broader conflict or forces a return to negotiations.