It started off with not having White House counsel accompany him to tha meeting.
He naively assumed they were all on the same team. Big mistake.
I kind of feel it started off with Flynn deciding to lie about what he talked about, even though he had some idea that the conversation might have been taped.
It was a silly lie, a lie about something that did not matter at all, but when the government is out to get you, any lie is all they need.
Sure, Comey, Stroyk, and McCabe all lied under oath, and one of them has actually been fired for it, and none of them face a single day of jail. But that’s because government is corrupt.