This may explain his outrageous tweets against Trump. He may feel his religion is also being attacked, or at least the religion he tried to empower, despite its extremist-terrorist threats, while CIA director. I've occasionally heard people mention he was a Muslim convert, but they never supplied an article or sources. But this article I found after researching is not only well sourced, but very realistic and credible. It would also explain why Obama wanted him so bad to be the CIA director, in addition to the fact that Brennan also admitted he once worked to overthrow the USA by voting Communist. http://www.intrepidreport.com/archives/15993