Petraeus: From America's General to Wall Street

For years David Petraeus was the man U.S. presidents turned to for guidance on scary situations around the world.

The former four-star general was the architect behind the "surge" campaigns in Iraq and then in Afghanistan. Petraeus later became America's chief spymaster before a scandal forced his resignation from the CIA in 2012.

Now Petraeus is the man investors turn to for advice before placing risky bets in dangerous parts of the world.