The U.S. Central Command shared footage that’s said to show a wave of attacks on Iran, in the early hours of Sunday (March 1, GMT).
It comes as Donald Trump issued a warning that the US will hit Iran "with a force that has never been seen before" if the Middle East nation retaliates after the death of their supreme leader.
In the footage, missiles are fired in the air towards Iran from an undisclosed location.
Satellite footage showing strikes on targets and resulting explosions was also released.
Early on Sunday, Iranian state media confirmed that the nation's supreme leader Ayatollah Ali Khamenei was killed in the US-Israeli airstrikes.