The US has attacked and seized an Iranian cargo ship attempting to get past its blockade of Iran's ports, President Trump saysTrump says the ship was given "fair warning to stop" but the crew "refused to listen, so our Navy ship stopped them right in their tracks by blowing a hole in the engineroom""Vacate your engine room, vacate your engine room, we're prepared to subject you to disabling fire" - watch the moment US forces attack the shipIran's military has said it will retaliate - Iranian…