Donald Trump’s press secretary Sean Spicer falsely accused Iran of attacking a United States naval vessel, an incident which - if it had really happened - could constitute an act of war.

Mr Spicer made the remarks during a press briefing called to explain a White House announcement that Iran had been officially "put on notice”, following a ballistic missile test and an attack on a Saudi naval vessel by suspected Houthi rebels off the coast of Yemen.
The President's spokesman appeared to both conflate Iran with the Houthis, a militia fighting the Saudi-backed Yemeni government, and confuse the US with Saudi Arabia in his comments.