The military campaign has killed Supreme Leader Ayatollah Ali Khamenei, sunk at least 10 Iranian warships and struck more than 1,000 targets.

The BBC's State Department correspondent and Washington correspondent explain how the president is justifying the action and assess the risks ahead.

The administration’s latest escalation is boosting the global view of the U.S. as a rogue actor, fueling instability, acting illogically and illegally and risking innocent lives.