Strait of Hormuz Closes Again as Iran Reverses Reopening; Oil Prices Surge 5%+
US Navy blockade remains in effect as fragile US-Iran ceasefire nears expiration
L'essentiel
- The Strait of Hormuz closed again after Iran reversed its decision to reopen the vital waterway, with President Trump confirming the US Navy blockade of Iranian ports remains in effect.
- Oil prices jumped 5.6% to $87.20 for US crude and 5.3% to $95.16 for Brent, while Asian markets mostly rose and the S&P 500 hit a record high.
- A fragile two-week ceasefire between the US and Iran expires Wednesday, with the US having seized an Iranian-flagged cargo ship.
Résumé généré par IA
Pourquoi c'est important
The Strait of Hormuz is a critical chokepoint for global oil shipments, with roughly 20% of the world's oil passing through it. The US and Iran have been in a military standoff, with Trump imposing sanctions and maintaining a naval blockade while pursuing diplomatic negotiations. A two-week ceasefire has kept tensions in check but expires Wednesday.
The Persian Gulf waterway was closed again after Iran reversed a decision to reopen the strait and President Donald Trump said a US Navy blockade of Iranian ports remains in effect. US benchmark crude gained 5.6% to $87.20 a barrel, while Brent crude, the international standard, was up 5.3% at $95.16 a barrel. Despite renewed doubts about how soon ships will again transport the vast amounts of oil the world gets from the Middle East, share prices were mostly higher in Asia. In Tokyo, the Nikkei 225 gained 1% to 59,045.45, while South Korea's Kospi was up 1.1% at 6,260.92. Hong Kong's Hang Seng added 0.8% to 26,373.71 and the Shanghai Composite index advanced 0.6% to 4,075.08. Australia's S&P/ASX 200 was nearly unchanged at 8,943.90. In Taiwan, the Taiex jumped 1.4%. “The problem for markets is not the absence of hope; it is the overpricing of it,” Stephen Innes of SPI Asset Management said in a commentary. “The latest move higher in equities has started to feel less like conviction and more like momentum feeding on itself.” Renewed uncertainty hits markets On Friday, oil prices had dropped back to where they were in the early days of the Iran war, and US stocks raced to a fresh record after Iran said the strait was open again for commercial tankers carrying crude from the Persian Gulf to customers worldwide. A free flow of oil could relieve pressure on prices for gasoline and all kinds of other products that get moved by vehicles. It could even ultimately help people pay less on credit-card interest and mortgage bills. The S&P 500 leaped 1.2% to an all-time high of 7,126.06, closing out a third straight week of big gains, its longest streak since Halloween. The Dow Jones Industrial Average surged 1.8% to 49,447.43. The Nasdaq composite climbed 1.5% to 24,468.48. The US stock market has jumped more than 12% since hitting a bottom in late March on hopes the United States and Iran can avoid a worst-case scenario for the global economy despite their war. The price for a barrel of benchmark US crude had plunged 9.4% after Iran’s foreign minister, Abbas Araghchi, posted on X that passage for all commercial vessels through the strait “is declared completely open” as a ceasefire appears to be holding in Lebanon. Brent crude fell 9.1%. After Araghchi's announcement, Trump said on his social media network that the US Navy’s blockade of Iranian ports remained “in full force” pending a deal on the war, though he also suggested that “should go very quickly in that most of the points are already negotiated.” President Donald Trump said on Sunday that the US had seized an Iranian-flagged cargo ship that tried to get around a naval blockade. Iran’s joint military command said Tehran would respond soon and called the US seizure an act of piracy. Investors monitor talks to end stand-off A fragile, two-week ceasefire between the US and Iran is set to expire on Wednesday, while escalating tensions in the Strait of Hormuz raises questions over new talks to end the war. Since the war began, market sentiment has swung between optimism and gloom over when the fighting will end and what costs the world economy will endure. A strong start to the earnings reporting season for big US companies has helped support stocks. In other dealings early Monday, the US dollar rose to 158.90 Japanese yen from 158.79 yen. The euro climbed to $1.1757 from $1.1742.
À surveiller
Perspective IA — des possibilités, pas des certitudes
The ceasefire will likely be extended for another short period to allow continued negotiations
Très probable · En quelques jours
Oil prices will remain volatile in the near term as negotiations continue
Très probable · En quelques semaines
Iran will issue a formal diplomatic protest over the cargo ship seizure but avoid immediate military response
Probable · En quelques jours
Questions ouvertes
- Will the ceasefire be extended beyond Wednesday?
- How will Iran respond to the US cargo ship seizure?
- Will the Strait of Hormuz remain closed for an extended period?
- What are the specific terms of the proposed US-Iran deal?






