An Iran-linked hacking group claimed responsibility Wednesday for a cyberattack on US medical technology giant Stryker, saying it had extracted 50 terabytes of data in retaliation for military strikes on Iran.
Iran warned it could wage a prolonged war with the United States and Israel that would "destroy" the world economy, even as US President Donald Trump said late Wednesday the Islamic republic was facing imminent defeat.
Iran's military vowed on Wednesday to launch strikes against US and Israeli economic interests in the region, including banks, while an Iranian news agency listed tech giants as possible "future targets".
Oil soared above $100 and stocks sank Thursday as Iran's fresh attempts to hit supplies in the Middle East and threats to bring down the global economy overshadowed a record release of strategic crude by the International Energy Agency.
One of the world's largest refineries in the UAE was shut as a "precaution" after a drone attack nearby, a source said, while Saudi giant Aramco warned of the war's devastating impact on oil.
Saudi Arabia said Wednesday it had intercepted a wave of seven drones heading towards a strategic oil field, as Iran renewed fire on its Gulf neighbours and their energy infrastructure.
Iran's new supreme leader Mojtaba Khamenei is "safe and sound" despite reports of an injury during the war with Israel and the United States, said the son of the Iranian president on Wednesday.
Drones fell near Dubai airport, injuring four people, while ships were hit in or near the Strait of Hormuz on Wednesday as Iran kept up its campaign disrupting oil markets and air and maritime traffic.