You would have to show tort. Which is possible though extremely difficult to prove in this case (that the harm caused was caused specifically to the persons initiating the suit).
Any soldier or civilian injured after this was made public? What if one of them initiated a lawsuit? Or parents of troops who have been killed? I have absolutely no knowledge in this area at all. It still seems it would be hard to prove that the leaker or the media were directly responsible for death or injury. (Even though I think they are).