He is not a Muslim convert (He just your standard liberal atheist on things religious!) but he is an extreme Islamophile. In some ways he is similar to Lawrence of Arabia on his affinity to the Arabic/Islamic world with the same problems and none of the virtues. Remember the Foreign Office’s main complaint about Lawrence was they couldn’t tell what side he was on!
John Brennan, is a convert to Islam... John Guandolo, a former FBI agent, said there was a clear indication CIA Chief John Brennan secretly converted to Islam between 1996 and 1999 while he was CIA station Chief in Riyadh.
In February 2013, John Guandolo, a former Marine who subsequently worked eight years in the FBI’s Counterterrorism Division as a “subject matter expert” regarding the Muslim Brotherhood and the global spread of Islam, stated that Brennan had converted to Islam years earlier in Saudi Arabia. Said Guandolo:
“Mr. Brennan did convert to Islam when he served in an official capacity on the behalf of the United States in Saudi Arabia. That fact alone is not what is most disturbing. His conversion to Islam was the culmination of a counterintelligence operation against him to recruit him. The fact that foreign intelligence service operatives recruited Mr. Brennan when he was in a very sensitive and senior U.S. government position in a foreign country means that he either a traitor … [or] he has the inability to discern and understand how to walk in those kinds of environments, which makes him completely unfit to the be the director of Central Intelligence.... The facts of the matter are confirmed by U.S. government officials who were also in Saudi Arabia at the time that John Brennan was serving there and have direct knowledge. These are men who work in very trusted positions, they were direct witnesses to his growing relationship with the individuals who worked for the Saudi government and others and they witnessed his conversion to Islam.”
Guandolo’s claim about Brennan’s conversion has never been corroborated by an independent source.
Brennan has publicly praised “the goodness and beauty of Islam,” which he characterizes as “a faith of peace and tolerance.” “The tremendous warmth of Islamic cultures and societies,” he said in 2010, typically makes visitors from non-Muslim lands feel very “welcomed.”
http://www.discoverthenetworks.org/printindividualProfile.asp?indid=2577
How do you know he isn’t a convert? He lived in Saudi for decades; fluent in the language and culture and married a Mohammedian woman. An extreme Islamophile and/or convert? A very fine line.