DUBAI: Hours after the strikes, Iran's paramilitary Revolutionary Guard said it launched a “first wave” of drones and missiles targeting Israel. There was no immediate word on any damage or casualties.

Saudi Arabia said in an announcement on state-run media that Iran had targeted its capital and its eastern region in an attack that was repelled.

Bahrain said a missile attack targeted the US Navy's 5th Fleet headquarters in the island kingdom. Witnesses heard sirens and explosions in Kuwait, home to US Army Central. Explosions could also be heard in Qatar.

The Iranian-backed Houthis in Yemen vowed to resume attacks on Red Sea shipping routes and on Israel, according to two senior Houthi officials who poke on condition of anonymity because there was no official announcement.

U embassies or consulates in Qatar, United Arab Emirates and Israel posted on social media that they told staffers to shelter in place and recommended all Americans “do the same until further notice.”