Everyone upset with the lack of sentencing, just bear in mind this isn't a fly by night leak, this is information presented to the courts.
No bluffing or lying allowed at this stage, you need to have your ducks in a row.
If they are saying no charges for Flynn, there is no good reason for it to be a bluff.
In fact, like the Trump questions trap that Mueller masterfully laid, I wonder if they allowed Flynn Jr. to continue to post shyt to make Trump feel confident that Flynn Sr. was resisting.
I remain impressed by the skill of Mueller and his team.