Israel carried out a military operation against Iran’s South Pars gasfield, part of the world’s largest. The move pushed oil prices higher and prompted warnings of retaliation, raising concerns over energy security and the risk of wider regional instability.

UK sources say Geneva talks had brought a new Iran nuclear deal close, with tougher inspections and phased sanctions relief under discussion. A senior UK adviser noted the surprising progress, but a subsequent regional crisis halted the negotiations.

Starmer says the UK will resist US pressure to take part in military action against Iran, calling it a difficult decision. He ruled out sending Royal Navy ships and dismissed threats tied to Nato, stressing Britain’s commitment to the alliance while prioritising diplomacy with European partners.

Ministers are considering deploying minesweeping drones to keep a key oil route open, wary that sending Royal Navy warships at Washington’s request could escalate tensions. The drones would clear suspected mines to protect tankers and maintain energy flows while limiting the UK’s footprint.