CNN Military Analyst Ret. Gen. Marks: Petraeus let his guard down, but 'almost 0% chance' security was compromised

This morning on "Starting Point with Soledad O'Brien," CNN Military Analyst and ret. General James "Spider" Marks says former CIA Director David Petraeus's resignation could be seen as a result of him losing 'his foundation' after leaving the military. Petraeus resigned on Friday after admitting to an affair with biographer Paula Broadwell.

Marks, who knew Broadwell when she worked for him about 10 years ago, says he's not surprised she was able to breach Petraeus's inner circle.

"Clearly, she’s a very bright – she worked for me, as you know – she’s an incredibly talented, very bright, creative, mentally fit, and let’s be frank, very attractive young lady, yet a wonderful officer," Marks says. "The point is, she’s a quintessential professional.”

"He let his guard down. He brought her in. And I think those around him who knew him best were kind of amazed at her ability to immediately get inside the close proximity," Marks says.

He adds, “On the professional level...there’s absolutely almost 0% chance that national security was compromised or was at risk.”