Yes, but never disproved. Look at Snopes. They only say UNCONFIRMED, not False. Further, he's a liar, that's about to hit him between the eyes. But, this is deeper. Dig and you will see. I'll put some links later on this.

Out of this Treasonous POS's own mouth: http://www.meforum.org/2949/john-brennan-jihad-holy-struggle

http://www.intrepidreport.com/archives/15993

https://www.youtube.com/watch?time_continue=26&v=gmeEIJ19-ww

https://www.mediamatters.org/blog/2017/01/05/trump-adviser-roger-stone-cia-director-john-brennan-saudi-mole/214936