What is to leak on this? It is going to be a dog and pony show: “we are very concerned by leaks. We are going to do all we can do to bring the leakers to justice. No, we don’t have any indictments to announce today, or tomorrow, or next week but rest assured we will get to the bottom of this. The FBI will be working non stop toward this end. We do not intend to put any reporters before grand juries at this time unless they show up with marijuana in their possession. Thank you and good day”.
Not much different than I postulated.
Why not have everyone in the administration wear: I DARE you to leak info. About as effective as this.
Where the leaks have been published, pull in the publisher, put them before a grand jury. If they claim some kind of confidentiality, jail em. Load, rinse, repeat as necessary.