I read those show trial books from the 1930s USSR

We know what we know. We know Obama knew about Benghazi and he knew about Petraeus (whether he knew about all those other crazies, is anyone's guess). What we don't know is what he has promised/threatened Gen. Petraeus. What Petraeus gets to keep of his reputation, rank, wealth, etc. if he goes along with the administration's version of Benghazi in the testimony, which has been set up to satisfy all those right wing nuts in Congress and on the internet.  If you believe it, that’s your business, you now own this mess.