In this, rather acrimonious, thread ("Iran is Wrong"):
http://www.democraticunderground.com/discuss/duboard.php?az=view_all&address=389x536760a link was posted to an article claiming that the Iranians refused to exchange the 15 Brits for the Iranian officials the US snatched in January from the consulate in Irbil, Iraq. This would be evidence that the Iranian government is behaving irresponsibly:
IRAN: GOVERNMENT RULES OUT PRISONER SWAP FOR SEIZED BRITONS
Tehran, 26 March (AKI) -
Teheran has no intention of freeing the 15 captive British sailors in exchange for the release of five officials from the Revolutionary Guard arrested in northern Iraq by US troops, Iran's deputy foreign minister said Monday, "The British military were arrested because they were trespassing in Iranian waters and will not to be swapped with our officials kidnapped by the Americans in Iraq," said Mehdi Mostafavi, speaking on Iranian state television.
http://www.adnki.com/index_2Level_English.php?cat=Security&loid=8.0.398980728&par=Well, the BBC now says the exact opposite:
BBC NEWS | UK | US rejects Iran captives exchange
US officials have ruled out a deal to exchange 15 Royal Navy personnel captured in the Gulf for five Iranians seized by American forces in Iraq.State department spokesman Sean McCormack rejected suggestions that an swap could be made.
The five, believed to be members of Iran's Revolutionary Guard, were seized in January in the Iraqi city of Irbil.
http://news.bbc.co.uk/2/hi/uk_news/6512927.stmIt sure takes two to play chicken. But it seems to me we'll soon be past the point where what's at stake is the lives and the freedom of 15 British soldiers.