The US has ordered all non-emergency government employees and their families to leave Saudi Arabia due to “safety risks” from ramped-up Houthi attacks .

Staff members were told to leave on 23 October following a number of strikes in recent weeks targeting civilian airports , hospitals, and other critical infrastructure, the US embassy ⁠in Riyadh ​said ⁠on Friday.

It comes as Yemen 's government armed forces spokesperson said that the Iran -aligned ⁠ Houthis attacked ​Aden ⁠airport and ⁠the Maashiq ​presidential ⁠palace complex with ‌ballistic missiles.

Staff have been told to leave the US embassy in Riyadh (AFP/Getty)

The attack comes after at least 13 people were killed and hundreds injured in a strike on Riyadh’s international airport on 10 October, making it the deadliest attack in the kingdom in more than a decade.

The Houthis, a Yemen-based armed paramilitary group with links to Iran, have vowed to keep attacking the hub, which they branded a "military target".

Officials said the airport reopened…