My GUESS:
The ‘mole’ was known to the Trump camp.
They allowed him/her to be privy to the location of a new safe that contained ‘nuclear documents’, in reality an empty box.
Then they just let the mole do his/her dirty work................
I thought the same thing - this is a mole hunt, and FBI played right into the hands of DJT.
I also said that every single piece of paper has been photographed in order...back and front...including taped papers (which Trump deliberately ripped and taped)...and the photographs are hidden away...and only his sons and one other person are privy.
He kept all the ladies and Barron in the dark to protect them.
Yep, the Trump people probably started an inside joke amongst themselves and talked about the “real stuff” in the safe. All the while leaving the safe empty.
That would be a fantastic practical joke.
So was the mole a double agent so to speak?