Another pipsqueak country is twisting the tail of the British lion. Argentina found out that isn't a particularly good idea. A lot of young Argentines died accomplishing exactly nothing in the Falkland Islands.
In the current crisis, Prime Minister Tony Blair needs to channel Margaret Thatcher. One suspects she would offer to not nuke Tehran if those 15 British sailors were released within 48 hours. I fear Tony doesn't have her backbone, thereby robbing the mad mullahs of mass martyrdom (lovely alliteration, that).