Looks like Goldsmith has been told to 'plausibly deny' that this has been gagged for political and not security reasons.

Better than that , Goldsmith is saying that he isn't gagging the media , he is just telling them that they will be in very serious trouble if they do report it .
So he hasn't banned them from publishing , its just that if they do publish then they can go to jail for publishing something that he isn't banning them from publishing ???????Work that one out