Video transcript
The US has announced a formal blockade of Iranian ports in coastal areas. This is a legal action. All vessels are advised to immediately return to port at leaving, and discontinue transit to Iran if that is your next port at all. Do not attempt to breach the blockade. Vessels will be boarded for interdiction and seizure at transiting to or from an Iranian port. Turn around and prepare to be boarded. If you do not comply with this blockade, we will use force. The hold of the United States Navy is ready to force compliance.
Transcribed automatically. Expect errors in names and numbers.