1) They had the Russian Ambassador bugged.
2) Getting him for a "did not recall" (a subpoint of the first charge) is interesting; I would take that as meaning that they have something recorded or in writing from after their interview contradicting his lack of memory of the topic.
3) Flynn probably gave Mueller something for this, since it seems to be a negotiated deal. The question is, what?
The original interactions with Russia were a big nothing burger. Flynn lied about it and if he did, I don’t know why he would do that. He was permitted under the law to say these things to the Russian ambassador. No treason topics nor election cheating were discussed.
So a guy who has already lied to the FBI and to others is now going to swear that he’s telling the truth to the FBI?
Fact: Mueller has reached the term limit (12 years) to be Director of the FBI, yet, in April the POTUS met with him under the guise of interviewing him for the job.
Fact: Mueller compromised by Uranium One dealings.
Opinion: The POTUS gave him a choice and a chance to clean up his act. In essence, he was told he can either end his career and legacy as the hero that saved the Republic, or spend the remainder of his life behind bars.
Fact: Remember, in the 2cd debate, Mr. Trump vowed that he would appoint a Special Prosecutor to investigate and imprison the Clinton Cartel.
Facts: Mr. Mueller IS that Special Prosecutor. The Clinton Gang specializes in selling Secrets, Uranium, as well as Blackmailing persons in positions of influence and power. Notice that Mueller’s staff specialize in those activities, and as Democrats, have access to information others would not have. Not all Democrats are bad, many believe in the Republic and sovereignty of this great nation, and are very angry about how the DNC has hijacked the party into a Globalist/Socialist front.
Opinion: Sessions is playing this perfectly.
Does that make for a good star witness?