In reply to Steve Parker: I think under the circumstances anyone in government cant do anything but posturing. I also dont think there is any "posture" that they could take that would enhance anyones stature in government.
When its all done and dusted i think not getting captured in the first place will be what should have happened and the fact that they did someone took their eye off the ball or got lazy.
Lastly the captives are rather like living in the big brother house unable to be aware of ehats happening outside and Im sure that the Iranians are playing on this to coerce them, that said I would think the Royal Marines wont be saying anything other than name rank and serial number