General Flynn IS the keystone.
He is armed with SO much information that will make the entire house of cards fall. They will do whatever they can to keep him from talking.
POTUS knows. Everything rests on this, Anons. Everything. You have to add the pieces together.
https://www.newsbud.com/2017/10/24/targeting-michael-flynn-shielding-the-radical-cleric-gulen-special-counsel-robert-mueller-must-step-down/