The US military says two of its personnel were killed in Jordan and another is missing after an Iranian attack, while Iran's supreme leader said Washington would pay for "seeking to incite war" after a seventh straight night of US strikes.

One service member is also missing in action following the strikes in Jordan.

CENTCOM says service members died as 'partner forces defended against Iranian ballistic missile and drone attacks'.

Iranian supreme leader warns US of ‘unforgettable lessons’