UPDATE: Fragile US-Iran ceasefire already deteriorating as Israeli strikes on central Beirut kill at least 182, prompting Iran to re-close Strait of Hormuz and sending oil prices back above $97, with negotiations set to begin in Pakistan.
The two-week ceasefire between the U.S. and Iran, announced late Tuesday by President Trump and mediated by Pakistan, appears increasingly fragile less than 24 hours after taking effect. Israeli strikes hit busy commercial and residential areas in central Beirut without warning on Wednesday, killing at least 182 people in what Lebanon called the deadliest day of the latest Israel-Hezbollah war. Trump told PBS News Hour that Lebanon was not included in the ceasefire deal, calling it 'a separate skirmish,' though Iran and mediator Pakistan said the pause extended to Lebanon.
In response to the Beirut attacks, Iran announced it was again halting movement of oil tankers through the Strait of Hormuz, reversing one of the ceasefire's key conditions. Iran's Revolutionary Guard Corps promised a 'regret-inducing response' if strikes on Lebanon continue. By midday Wednesday, only three vessels had crossed the strait since the ceasefire announcement, far below the typical 138 ships per day before the conflict began February 28. Ships in the Gulf received warnings from Iran's navy that any vessels crossing without permission 'will be targeted and destroyed,' according to shipping brokerage firm SSY.
Oil prices, which had plunged below $100 per barrel immediately after the ceasefire announcement, reversed course Thursday and rose back above $97. Brent crude jumped 3.5% as markets reacted to Iran's closure of the strait and the continued fighting in Lebanon. Stock markets that had surged Wednesday on ceasefire optimism gave back some gains, with European indexes falling between 0.3% and 1.3%. Under the ceasefire terms, the U.S. agreed to suspend attacks on Iran for two weeks if Tehran reopens the strait, while Iran issued a 10-point plan including demands for complete cessation of war, lifting of sanctions, and compensation for reconstruction costs. Vice President JD Vance is expected to lead the U.S. delegation in negotiations with Iran in Pakistan on Saturday.
Editor’s rationale — Historic ceasefire between US and Iran represents major structural shift in Middle East conflict with immediate implications for global energy markets and regional stability; strong primary sourcing from Trump, Iranian officials, and regional leaders, though some ambiguity regarding implementation details and Lebanon's status limits verification to 13 points.