Andrew McCarthy, FOX News
As I understand it and as Comey testified to a closed session, according to The Wall Street Journal as then FBI director Comey testified to a closed session of the House Intelligence Committee in March, the reason they hadn’t brought any case against Flynn at that point was because the agents that interviewed him believed him and that was [Peter] Strzok. So the fact that Flynn ended up pleaded guilty to lying in that interview was not Strzok’s idea. Evidently, Strzok was not pushing that. That was the very aggressive Mueller investigators toward the end.
Source: Real Clear Politics