Why is this not a big deal?
Iran has basically told the US not to come back to the Persian Gulf. While it may be posturing it doesn't appear to be a big deal. A second string nation has been allowed to twist the tale of the tiger almost without comment.
Iran says U.S. warships in Persian Gulf spawn 'mayhem' - CNN.com
Usually such actions are a prelude to conflict, but the US appears to be acting like it didn't happen or Iran is of no consequence. If Iran is of no consequence why is their atomic program such a big deal?
Is Iran emboldened by the withdrawal of US combat forces from Iraq?