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'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".

Dozens of U.S. service members were seriously injured after an Iranian drone strike targeted a U.S. tactical operations center in Kuwait early in the war. Several troops remain hospitalized across military medical centers in the U.S. and Europe.

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.

The Trump administration may soon request up to $50 billion more from Congress as the conflict expands across the Middle East.

Foreign military strikes on Iran have intensified debate over the country’s political stability, exposing deep divisions within society about the regime and the cost of war.

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.

Iran’s central military command, Khatam al-Anbiya, warned it will target economic centers and banks linked to the United States and Israel across the region after overnight strikes.

Israeli strikes on oil storage facilities near Tehran over the weekend temporarily turned the Iranian capital into a fire-lit “hellscape,” with long-term environmental and health damage expected.

Iran has begun laying mines in the Strait of Hormuz, the world’s most important energy chokepoint that carries about one-fifth of all crude oil, according to two people familiar with US intelligence reporting on the issue.