Iran closes Strait of Hormuz again as Vance arrives in Switzerland for peace talks
Iran's joint military command announced the closure of the Strait of Hormuz, citing continued Israeli military operations in Lebanon, casting a shadow over a nascent US-brokered peace deal. US Vice President JD Vance flew to the Swiss mountain resort of Bürgenstock to meet Iran's delegation and work on implementing the deal. Washington disputed Tehran's claim that the waterway is fully shut. The standoff leaves global oil markets in a state of acute uncertainty: a confirmed closure would choke off roughly a fifth of world oil supply.
The Strait of Hormuz is the world's single most important oil choke point. Even a partial or contested closure drives up Brent crude prices, widens war-risk insurance premiums for tankers, and forces buyers to scramble for alternative supply — pushing up costs across every oil-importing economy. Markets had already rallied earlier in the week on hopes of a peace deal (Bloomberg noted stocks climbed as the US-Iran deal eased oil concerns); a renewed closure threat reverses that relief trade. For bond markets, higher oil means higher inflation expectations, which pushes sovereign yields up and complicates central-bank rate paths globally.