The facts of the case are clear, so really what matters is if you accept them or not. You seem to be implying here that you will not, so there really isn't anything to discuss, is there?It was stated as a fact that the Iranian speedboats acted illegally I am asking for the proof of this claim. A very straightforward request.
btw The Iranian account of the incident is that this was SOP, they asked the US ships to identify themselves and once they had done so they left them alone. They also deny any threats were made so it would be good if the US gov't were to clear up that point by making the tapes available of the radio interchange.
But lets start with this: assuming you did accept the US account, would you agree these three actions are overtly hostile:
1. Dropping objects into the water in the path of the ships.
2. Making an overt threat (something to the effect of "we are going to blow you up").
3. Steaming at high speed toward the US fleet, coming within a few hundred yards of it.
I suspect you will simply refuse to accept the facts as reported, so this is probably just pointless. BTW, you have not provided an account of what happened or evidence to support it. It is reasonable for us to assume that you've at least read the article in the OP, so you already know these facts. There is nothing for us to substantiate.