Gulf states on high alert after US strikes Iran's nuclear sites

Gulf states, home to multiple U.S. military bases, were on high alert on Sunday after U.S. strikes on Iran raised the possibility of a widening conflict in the region.

U.S. forces "obliterated" Iran's main nuclear sites with massive bunker-busting bombs in the early hours of Sunday in the region, President Donald Trump said, warning Tehran it would face more devastating attacks if it does not agree to peace.

Saudi Arabia, the world's largest oil exporter, was on a high-security alert after the U.S. strikes, two sources with knowledge of the matter told Reuters on Sunday, while Bahrain urged drivers to avoid main roads.

Kuwait, another key oil exporter in the region, said its defence council would remain in permanent session, according to the state news agency on Sunday, and set up shelters in a ministries complex.

Tehran has previously warned that if it were attacked by the United States, it could target American assets in the region, including U.S. military bases.

Bahrain is home to the headquarters of the U.S. Navy's 5th Fleet and there are U.S. bases in Saudi Arabia and Kuwait, as well as in neighbouring Qatar and the United Arab Emirates.

Nuclear authorities in Saudi Arabia and the UAE said they had not detected signs of nuclear contamination following the strikes in Iran.

"While the war has so far been contained in direct hostilities between Israel and Iran, direct U.S. involvement is a critical threshold that risks dragging the Gulf states, notably Bahrain, Kuwait and Qatar, which host large U.S. military facilities, into the conflict," said Hasan Al Hasan, a senior fellow for Middle East Policy at the International Institute for Strategic Studies.

He said the risk of an open conflict between the U.S. and Iran could plunge the region into a devastating and potentially protracted conflict.

The U.S. strikes added to airline woes with Singapore Airlines cancelling scheduled flights from Singapore to Dubai on Sunday and British Airways cancelling flights to and from Dubai and Doha.

Airlines have been avoiding flying over large parts of the Middle East, including Iran, Iraq, Syria and Israel, due to ongoing missile exchanges.

"In light of recent developments in the regional security situation, we urge citizens and residents to use main roads only when necessary to maintain public safety and to allow the relevant authorities to use the roads efficiently," Bahrain's interior ministry said in a post on X.

Bahrain also told 70% of its government employees to work from home on Sunday until further notice, citing escalating tensions, according to the Civil Service Bureau.

The country's authorities earlier this week said they had activated a national plan to prepare for emergencies, set up an emergency centre and tested warning sirens.