UK PM and US President call to reopen Strait of Hormuz

Downing Street says Prime Minister Keir Starmer spoke with US President Donald Trump on Saturday 22 March 2026. Both leaders focused on the fast‑moving Middle East crisis and agreed that reopening the Strait of Hormuz is essential to resume global shipping and stabilise energy markets; they also agreed to speak again soon. (gov.uk)

If you’re teaching this tomorrow, start with the map. The Strait of Hormuz sits between Oman and Iran, linking the Persian Gulf to the Gulf of Oman. At its narrowest it is about 33 kilometres (21 miles) wide and tankers use two roughly two‑mile‑wide lanes in opposite directions, which concentrates traffic and risk. (apnews.com)

Scale matters. In 2023, an average of 20.9 million barrels of oil moved through Hormuz each day-about 20% of global petroleum liquids consumption and more than a quarter of global seaborne oil trade. (eia.gov)

It is also about gas. Roughly one‑fifth of global liquefied natural gas (LNG) transited Hormuz in 2024, mostly from Qatar. The US Energy Information Administration estimates Qatar shipped around 9.3 billion cubic feet per day via this route last year, with the United Arab Emirates adding about 0.7 Bcf/d. (eia.gov)

Who relies on it? Most flows head east: EIA data indicate that about 83% of crude and condensate that transited Hormuz in 2023 was destined for Asian markets. The United States still has exposure-about 0.5 million barrels per day came via Hormuz in 2023, roughly 2% of US petroleum consumption. (eia.gov)

So what has actually happened this month? Port agents reported that, although there was no internationally recognised legal closure as of 3 March, Iranian radio warnings and corporate risk rules led most ships to divert or wait. In practice, that meant a sharp reduction in traffic even before any formal announcement. (iss-shipping.com)

That backdrop explains the high‑level diplomacy. On 22 March, Axios reported that President Trump warned Iran to reopen the strait within 48 hours or face strikes on power infrastructure, while the Associated Press described Iran’s continuing grip on shipping amid wider regional threats. This is the tense context for the UK–US call. (axios.com)

If you’re reading this from the UK, here’s the ‘so what’. When fewer tankers get through, crude prices tend to rise; over time that filters into petrol, diesel and airfare costs, and into school and household budgets. Officials want the strait open quickly because there are few genuine alternatives. (eia.gov)

What can help in the meantime? Some oil can bypass Hormuz using Saudi Arabia’s East–West pipeline to the Red Sea and the UAE’s link to Fujairah on the Gulf of Oman. The EIA estimates around 2.6 million barrels per day of effective spare bypass capacity-useful, but far short of normal Hormuz flows. (eia.gov)

To learn well from fast‑moving stories like this, lean on original readouts for what leaders said, data‑rich sources for scale, and maritime advisories for real‑world operations. For this one: Downing Street’s note on the call, EIA chokepoint analysis, and port‑agent updates are solid starting points. We’ll keep explaining as facts change. (gov.uk)