Gen. Petraeus with wife, Holly, left, in 2011. (Mandel Ngan / AFP - Getty Images)
CIA director David Petraeus submitted his letter of resignation to President Obama on Nov. 8, 2012. In a letter to CIA employees, he said: "After being married for over 37 years, I showed extremely poor judgment by engaging in an extramarital affair. Such behavior is unacceptable, both as a husband and as the leader of an organization such as ours." Petraeus said Obama accepted his resignation on Nov. 9. - msnbc