Timeline:
John Brennan | American intelligence officer | Britannica.com
https://www.britannica.com/biography/John-Brennan
Responding to an employment listing in The New York Times, Brennan began his long career in the CIA in 1980. After joining the Directorate of Intelligence (DI), the agency’s analytic branch, in 1981, he served with the State Department as a political officer at the U.S. embassy in Jiddah, Saudi Arabia (1982–84).
Very telling.