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.

Dubai hotels are offering discounted staycation deals for UAE residents as international travel slows due to regional conflict and flight cancellations.

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".

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.

Spain has permanently withdrawn its ambassador from Israel, formally downgrading the level of diplomatic relations with the country.

The FBI has warned the authorities in California that Iran has planned drone raids launched from an unidentified vessel off the West Coast, according to an alert reviewed by US media outlets. Local officials, however, have cast doubt on the warning, saying it is unverified.

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