That would certainly explain his troublesome friendliness toward Muslim Brotherhood groups. "Barack Obama's choice for CIA chief 'converted to Islam' former FBI agent claims," by Kerry Mcdermott for the Daily Mail, February 12 (thanks to all who sent this in):
The incoming head of the CIA converted to Islam while working as a station chief in Saudi Arabia in the 1990s, a former FBI agent has claimed.
John Guandolo, who retired from the FBI in 2008, said in a radio interview that John Brennan - who has been nominated by Barack Obama as the new director of the CIA - visited the Islamic holy cities of Mecca and Medina accompanied by Saudi officials who may have persuaded him to convert.
Mr Guandolo's tale echoes elements of the plot of hit show Homeland, in which U.S. Marine Nick Brody converts to Islam while being held prisoner by al-Qaeda, only to begin working for the CIA after his release.
Mr Guandolo told the Trento Radio Show via Skype that Mr Brennan visited the holy sites during the Hajj season - in sees hundreds of thousands of Muslims converge on the cities to perform a series of rituals - while serving as CIA station chief in Riyadh between 1996 and 1999, a report on Al Arabiya News said.
Non-Muslims are prohibited from entering Mecca, and are not permitted to enter the city centre, or sacred core, of Medina.
The ex-FBI agent told the radio station Mr Brennan was 'unfit' to take charge of the CIA, and claimed U.S. government officials based in Saudi Arabia during that period 'were direct witnesses to his growing relationships with individuals who work with the Saudi government and they witnessed his conversion to Islam'.
Mr Brennan, 57, has spent more than three decades working in intelligence.
He was nominated as the new head of the CIA on January 7 by President Obama, after predecessor General David Petraeus was forced to resign amid a scandal surrounding an affair with his biographer....
The CIA is yet to respond to the MailOnline regarding Mr Guandolo's claims.
Don't hold your breath.