they've often said they're not happy about the u.s. navy having ships in the persian gulf. so they'll send ships towards the u.s. but the actual facts are, it might be something very tough for them to carry out. it's pretty complicated to send ships for very long distances, for long periods of time, supplying the crew, supplying the ship. right now, the u.s. doesn't seem to think that the iranians are about to do it. they do think it's a statement, but not a fact just yet. >> so, barbara, i've read that in 2011, iran twice announced that they were sending warships to the u.s. maritime borders. is this a response to the u.s. beefing up its presence in the persian gulf? are these two correlated? >> that's probably a good bet that the iranians are sort of making this statement for their own political domestic, inside