President Trump has indicated that the U.S. was given prior warning of the Iranian strike. U.S. and Qatari authorities said the missiles were intercepted.

Prior to attack on biggest US military base in Middle East, US had already started taking ‘force protection’ measures.

WASHINGTON (AP) — Iran retaliated Monday for the U.S. attacks on its nuclear sites by targeting Al Udeid Air Base, a sprawling desert facility in Qatar that serves as a main regional military hub for American forces. A U.S. defense official says no casualties have been reported.