The State Department also ordered nonessential staff in the United Arab Emirates, Qatar, Bahrain, Jordan and Iraq to to leave amid further retaliation from Iran.

Photos show US pilot being rescued after apparently ejecting over Kuwait - as smoke seen rising near the US embassy

The incident that occurred late on Sunday was confirmed by top Pentagon officials during a Monday press conference.

Separately, a drone attack hit the U.S. Embassy compound in the Persian Gulf state, as Iran continues to target American assets across the Middle East.

Kuwait considers attack as 'an act that constitutes a blatant violation of all international norms and laws,' says Foreign Ministry - Anadolu Ajansı

The US defence secretary confirms a US military base was hit by an Iranian missile on Sunday.

The first American service members to die in the U.S.-Israeli war with Iran were killed in an apparent Iranian drone attack on a makeshift office space in Kuwait, sources told CBS News.

The Ministry of Foreign Affairs, cited by state news agency KUNA, said Kuwait maintains its right to defend itself, underscoring the country’s defensive stance as a host of US military assets.