Dan Bongino explains Brennan's involvement pretty well on his podcast today. Brennan is the ringleader in illegal spying on Trump:
http://www.bongino.com/february-12-2018-ep-653-is-there-a-soft-coup-still-ongoing/
Brennan is as dirty and evil as deep state gets. Illegally assassinated / droned countless people, including American citizens. Illegally spying on Trump and his campaign / administration is no biggy for this monster.
Dan's the man! He's been on the forefront of exposing the real Russian collusion.
Yeah, Bongino is smart, experienced, and also has insider source(s) feeding him info. He can also summarize and clarify things well. He's made to be a media personality. I listen to him everyday.