I agree with you that that information must surely exist. And if it was true that in recent times people who stole and leaked that information for the terrorist

I agree with you that that information must surely exist. And if it was true that in recent times people who stole and leaked that information for the terrorists to profit got away with it lightly, then I would agree that stricter laws were in order. But in this case, he's referring to Miranda's case. Miranda was in _possession_ of the leaked documents, he did not steal them himself. Besides that he is clearly (in service of) a journalist. Are we to prosecute journalists for possessing secret information no one knows of, that they haven't even leaked yet? Aren't the Snowdens and Mannings already punished enough to deter any selfish leaker?