CIA Chief Petraeus Resigns Over Extramarital Affair

The abrupt departure of celebrated general, David Petraeus, at the helm of America's top spy agency, Central Intelligence Agency (CIA) after admitting an affair sent shock waves across the political class.

The retired four-star general, who had a distinguished 37-year career in the military prior to joining the CIA, helping turn the tide against insurgents while commanding forces in Iraq and Afghanistan, became CIA chief in September 2011.

The Federal Bureau of Investigation (FBI) had a tip he was involved with his biographer, Paula Broadwell, and investigated the alleged affair to determine whether it posed a security risk.

Broadwell spent a year with Petraeus in Afghanistan interviewing him for the book she co-wrote, "All In: The Education of General David Petraeus."