A drone attack has been launched on the US embassy in the Saudi capital Riyadh. The Saudi Defense Ministry said two drones were used in the attack, causing a fire in the embassy compound.
Iran had vowed to carry out such an attack in the Gulf in retaliation for attacks on Iran by the US and Israel. .
US President Donald Trump said Iran would respond swiftly to the attack on its embassy and the killing of four Americans, according to the News Nation news agency.