Europe Brief: Hormuz Closes Again After 24 Hours — Jet Fuel Window Narrows Further
Iran's IRGC shuts Strait of Hormuz again just 24 hours after opening. Two Indian ships fired upon. Oil rebounds. Jet fuel surge making global flight connections disappear. IEA's six-week clock still ticking. Europe weighs defensive maritime mission.
Day 51. The diplomatic momentum collapsed. Just 24 hours after Iran declared Hormuz "completely open," the IRGC closed it again. Two Indian ships were fired upon. Oil rebounded. For Europe, the consequences are acute: the IEA's six-week jet fuel warning is still ticking, flight connections are disappearing, and the window to avoid systemic shortages just narrowed further.
Commodity snapshot (as of April 18 — Day 51)
- Brent crude: rebounded into the mid-$90s after Friday's $90 close
- IRGC: Hormuz closed until US blockade is lifted
- Ships fired on: 2 Indian-flagged vessels
- Jet fuel: Europe has ~6 weeks of supply left per IEA
- US-Iran ceasefire: expires April 22
The 24-hour reversal
Friday's opening lasted less than a day. The IRGC shut Hormuz again on Saturday afternoon, citing the continued US blockade of Iranian ports. "Approaching the Strait of Hormuz will be considered cooperation with the enemy," the IRGC warned. The reversal exposed a hard truth about Iran's decision-making: Foreign Minister Araghchi's diplomatic gestures don't bind the security establishment. For European governments that had allowed themselves cautious optimism, the closure is a reminder of how fragile this crisis is.
Ships fired upon
Two Indian-flagged ships — the Sanmar Herald and Jag Arnav — came under fire from IRGC gunboats in the strait. One was a supertanker carrying 2 million barrels of Iraqi oil. India summoned Iran's ambassador. The attack on vessels from a non-US, non-Israeli country is a significant escalation. For European shipping companies still hoping to route tankers through Hormuz even during the crisis, the incident makes the calculus untenable: if Iran will fire on Indian ships it had cleared hours earlier, no one is safe.
Jet fuel: the crisis bites
Fortune reported Saturday that the jet fuel surge is making global flight connections disappear. The IEA's six-week warning from Thursday remains in effect. Italy continues rationing jet fuel at four airports. Ryanair and EasyJet's warnings of EU airport delays from May 4 loom. Airlines are raising baggage fees and fares. NPR reported jet fuel prices have doubled. For European tourism — already fragile after the post-Ukraine energy shock — the summer season hangs in the balance. Even if Hormuz reopens, the refining capacity needed to turn crude into jet fuel is limited.
Europe's defensive mission
The Macron-Starmer Hormuz Maritime Freedom of Navigation Initiative — announced Friday at the Paris summit — takes on new urgency. Over a dozen countries pledged contributions to the "strictly defensive" multilateral mission. The attacks on Indian ships underscore the need for escort and mine-clearance capabilities. But deployment remains conditional on "security conditions" allowing it — and Saturday's reversal suggests those conditions have receded, not improved.
Oil: the price compass still shattered
Brent rebounded from Friday's $90 close into the mid-$90s. The reversal caps off a week of extreme volatility: $99 Thursday, $90 Friday, mid-$90s Saturday. European refineries face a market that is now fully untethered from fundamentals. Gelber & Associates noted earlier in the week that "a small but increasing number of tankers" were moving through Hormuz — that trickle has now reversed. Physical crude premiums for European delivery remain extreme.
What to watch
Whether Monday's Islamabad talks actually happen. The ceasefire expires Wednesday, April 22. The jet fuel clock — now closer to five weeks. Whether NATO allies move faster on the defensive Hormuz mission now that the strait has closed again. And the Irish political crisis, which has simmered all week — if fuel disruptions continue into next week, the no-confidence question may move back into play.
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