Sources said a fire broke out at the combined-heat-and-power unit of Marathon's Galveston Bay refinery in Texas; no injuries reported so far.

International oil prices opened higher on Monday after Trump warned he would strike Iran if Hezbollah continues to attack Israel, a move that raised doubts over progress in talks between Washington and Tehran. WTI crude rose as much as 1.7%. The warning came days after Trump signed a memorandum last week launching a 60‑day negotiation window; high‑level talks began at the Bürgenstock resort in Switzerland. Iran said it had again closed the Strait of Hormuz, but millions of barrels continued to transit the waterway over the weekend.

Pakistan's foreign minister said Iran will not block ships transiting the Strait of Hormuz over the next 60 days and will not charge for passage, Saudi outlet Hadas and Al Arabiya reported.