Even the Pentagon has doubts about naval confrontation.

The list of those who are less than fully confident in the Pentagon’s video/audio mashup of aggressive maneuvers by Iranian boats near American warships in the Strait of Hormuz now includes the Pentagon itself.
Unnamed Pentagon officials said on Wednesday that the threatening voice heard in the audio clip, which was released on Monday night with a disclaimer that it was recorded separately from the video images and merged with them later, is not directly traceable to the Iranian military.
That undercuts one of the most menacing elements from the Pentagon’s assertion that Iranian forces threatened the Navy ships: The voice on the radio saying, “I am coming to you. … You will explode after … minutes.”


http://thelede.blogs.nytimes.com/2008/01/10/degrees-of-confidence-on-us-iran-naval-incident/?hp