Flynn was director of DIA.  He "knows where the bodies are buried."  Theory is that he set up DS.    He knew that he was being illegally spied on.  Key word: illegally.  He lied to Pence about his conversation with Kislyak to set up DS.  What he did was not a crime, but it's something he knew the spies would pick up on.  They fell for it and went to interview him, and then falsified charges against him.    Flynn took a plea deal, knowing that there was no case.  Part of his plea deal was to provide evidence and information for prosecutions of any crimes he might know about.  This allowed him to override his NDA.    AG Jeff Sessions brought Ezra Watnick-Cohen into the DOJ.  Cohen was Flynn's protege at the DIA.  Flynn could provide classified intel to the DOJ through Cohen. Stone is the one who got Manafort into the Trump campaign.  Stone and Manafort were business partners in the past. Manafort was a plant into the Trump campaign.  Manafort was business partner with Tony Podesta, and was involved in illegal operations in Ukraine with Clinton-connected people.